WEATHER FACSIMILE JAX 9a instruction manual

The JAX-9A has an Automatic Frequency Selection function to select a frequency for optimum picture reception among a group of broadcasting frequencies.. Automatic frequency selection The

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WEATHER FACSIMILE

INTRODUCTION

Thank you for purchasing the JRC weather facsimile receiver Model JAX-9A

The JAX-9A receives short-wave weather facsimile signals (2 MHz to 24 MHz) and graphically prints them on paper

@ Read this manual carefully before using the JAX-9A

@ Keep this manual near at hand for quick reference (to solve problems that you encounter while using the product)

BEFORE YOU USE THE JAX-9A

This manual contains various symbols and marks to alert and inform of troubles and to prevent personal injuries and property damages Read the notices and instructions below carefully before using the JAX-9A Safety precaution symbols

This safety reminder is given to items that are potentially dangerous to life If /\ WARNING _ these items are done improperly, you will be seriously injured and in extreme

cases, you will be put to death

This safety reminder is given to items that are potentially dangerous to your body

/\ CAUTION and property If these items are done improperly, you will be injured and

property will be damaged

@) &® The mark Q indicates an action of prohibition The specific item is

Do not described pictorially in or near the mark, for example, representing

Prohibited “Do not disassemble” on the left

Electrical hazard

disassemble

& item is described pictorially in the mark, for example, representing

Remove play Instruction “Remove plug from outlet” on the left

The mark @ indicates a forced or instructed action The specific

Warning labels

Do not peel off, break, and modify the label on the JAX-9A

Use the specified power supply only A higher voltage may cause the product to malfunction

or fire, or give you electric shocks

Do not put anything into the product through the ventilation holes or openings of the product

Do not block the ventilation holes (Otherwise, the product may malfunction, fire, or give you

“ Never modify, alert, or repair the product Improper servicing may cause malfunction, fire, or

electric shocks For checking and servicing, call your local JRC distributor

a When finding any trouble in the product, immediately turn off the power switch of the product,

unplug the power cable of the product from the outlet, and call your local JRC distributor Do not keep on using the product (Otherwise, the product may malfunction, fire, or give you electric shocks.)

Place the JAX-9A on a solid, stable, and leveled location (Ifthe JAX-9A falls onto the ground or

over a person, the JAX-9A may be broken and you may be injured.)

Do not place the JAX-9A on damp, wet, steamy, dusty, or oily locations (Otherwise, the product

may malfunction, fire, or give you electric shocks.)

Do not place the JAX-9A on a location in direct sunlight The facsimile paper on it may be

discolored and the JAX-9A may be in trouble

After turning off power to the JAX-9A, always wait at least one second before turning on power to

the JAX-9A again If you turn on power immediately after turning off power to the JAX-9A, the JAX-9A may malfunction

External Views of the JAX-9A

JAX-9A Weather Facsimile Receiver

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TABLE OF CONTENTS

INTRODUCTION SE ccc ecssceereesesevenevseseaeeessasacaesesesssasaeaesssesseseseresessesesesaesassesesesasseeuecsesssscasessesessssceuseners 1

SAFETY PRECAUTIONS ca 2118110111110 111111 1101k HH HT HH TH HH Tiệp 3 External Views of the JA X-ĐÀ cu ceiceấ n2 110101 1011101011112 4 811k HH TH TH HH H011 0 c1 5 TABLE OF CONTENTS 2c cuc a ệ Hàn H12 4 k1 H1 H1 010111 1x H1 HT TT TH TT HH1 1n 6

#5 49/0/909 S 4 4d 8 CHAPTER I7 GENERAL Ặ Q2 HH 1111281011111 HH HH TT dt 10 BAN .(4{ẬäẬAẶẬAẬặH, 10

CHAPTER 3) INSTALLATION ooo eceseececesesceresesesesesececeseseseneseseseseseeseneneeseseeessenssacsesececsestecsessseessesecstenes 20

3.1 Installation Procedure nan Aạặậ)ạà)LĂÃ) 20

3.2 Installation Precautions eceecseseeseseseeseeeseceesseesecesesesesensscsesesesseaeseseseeuessesesesecsssscasssesscsessssesessecsvseaes 22 EU ái na na HA34 22 3.4 Installation DiaBTAIS án HH2 HH 1111111111111 1111 11T HH TH TT HT HT HH TH TH TH Hi 23

3.5 Cable Commection na .ồ '.: ỏố 24

3.6 Connection of the JIC Decoder (NWF-45) c1 02010 101 00 g2 014 L0 Á Q11 ch HH HH nay 25 CHAPTER 4 OPERATION 20.22202002 21 02002 tố và Hồ 0á ác và tá hà Ện tán Tá Cà kh TH HT HT TH 27 4.1 Setting Receiving FreqU€DGICS¿:2:2262 ác 021022220 xe TH HỒN tỏ T1 kg KH HH HH TT kg 27 4.1.1 Automatic frequency sel€CfORi c ch nổ ván à nề 100 c2 Ta à là nen TH HT HH re 27 4.1.2 Setting the receiving Íf€QUEHCY L c6 cv 020010011 v2 11g L0 Cá ng c0 cá C111 TỦ tk HH HH HH ky 30 4.1.3 Registering receiving ÍTeqUENGI€S.: :.:.2 2.22002000210001 011 046111 31 4.2 Calling a Registered FT€QLIETCY càng HH HT TT Hà LH HH HH TH TH TH TH TT HT HH Hy 36 4.3 Setting the Facsimile Receiving MOdG con ng 01111 0111 g1 TH xe 38 Z“ANG 091 a .Ả 39

“006 nh ẽ 5 41 4.3.3 Compulsory recording operation (.REC OperafOT) LH HH HH HH ngay 43

4.3.4 PROG recerving mode (TÌIN€T) Làn HH TH HH HH Tàn HT TH TT TT nung hp He 46

4.4 Checking and Changing a PTOBTAT 2t cac TH HH 01 1K TH TT TH TH TH TT HH ràu 53 4.4.1 Checking a PTOBTAI cv HH 21 hi T Thác Tà TẢ kg HH HH HH HH HH HH 53

KỶ “x' co oổon n6 Ằ& 55

“S6 nh Ả 56 4.5.1 Brighiness adjustment In OpDerafiOn DaT€Ì, ch HH H11111 121011 g1 HH HH1 HH ệu 56 4.5.2 Switching †o the externaÏ F€C€TV€T các c SH 11012 HH1 Hy TH TH HH TT HT Tàn HT HH 37

07 407: 0.1609) 10.92 101 ố 69

§.1 Disposal of the JAX-9A ch H111 1 HH1 tk HH H111 10g 69 8.2 Disposal of the Exhausted Baffery HH2 H HH HH th Hà Hư ch 69

MP 0395.6517500) (0.000).17177 70 [.ux0)I8)9 05M 72

1 (20.00900499 069500 1005 = 72

2 FOR RECEPTION OF CLEAR FACSIMILE PICTURES ác Ặ HH HH hư 76

TERMINOLOGY (Description of Main Terms)

Scanning: The facsimile receiver picks up a facsimile signal from the air and reproduces

it into pictures In reproduction, the recording head starts to print out a picture dot by dot from the left end of the facsimile paper towards the right end

of the paper, wraps around to the left end of the paper from the right end, prints another line towards the right end from the left end, repeats these steps until the end of the signal comes This movement of the recording head is called "scanning."

Primary scanning Scanning direction

Primary scanning:

Secondary scanning:

Scanning line density:

Scan speed (SCAN):

Index of co-operation (IOC):

Half-tone recording (HALF):

Start signal:

Movement of the recording head from left end to right end

In the main scanning, the recording head prints eight dots per 1 mm

Movement of the paper Number of scanning lines printed while the paper moves by 1 mm Speed of primary scanning (represented in scans per minute (SPM)) pina nr nn ee ee ee ee eee,

When the size of a document (original) sent from the weather station is not

equal to the size of facsimile paper on the facsimile receiver, the original picture is reduced or magnified to form a similar picture on the facsimile paper with the ratio of the length to width of the original unchanged This ratio of reduction or magnification is termed "a co-operation coefficient." Using dot patterns of variable density (coarse pattern and fine pattern) to simulate gray levels of clouds (photographed by a weather satellite) The very first signal in the facsimile broadcasting from the weather station This signal declares that the facsimile broadcasting starts with this On receiving this signal, the JAX-9A automatically starts to receive facsimile broadcast signals

Sync signal:

Similar signal:

TERM INOLOGY (Description of Main Terms)

A signal that follows the start signal and always positions on one end of a picture when the signal is well synchronized The JAX~-9A uses this signal for automatical setting of the scanning density and speed This signal is always required for automatic reception, manual reception, and program reception

A signal that follows the phase signal and always positions on one end of a picture The JAX-9A uses this signal for phase matching (synchronization)

in manual reception and forced recording

(To receive the pay broadcasting, you must make a contract with the Kyodo News Service and rent the

IC decoder (NWF-45) from the Kyodo News

A variety of receiving methods

@ Automatic reception (AUTO)

The JAX-9A can be remotely controlled to automatically start up, set parameters, receive pictures, feed paper, and stop by remote signals sent from the broadcasting station However, only the half-tone recording is manually controlled

@ Manual reception (MANUAL)

In this mode, you can manually set the index of co-operation, the scanning speed, and the half-tone recording The JAX-9A automatically records and stops in this mode

Forced recording (REC)

This is an extensive function of the manual reception The JAX-9A can manually record while the JAX-9A is neither in the AUTO mode nor in the MANU mode (while broadcasting is in

progress) In this mode, phase matching is done manually TheJAX-9A employs a unique method of terminating phase matching instantaneously

@ Program reception (Timer)

This function using the built-in timer enables unattended operation of the JAX-9A at the scheduled time points and in the programmed sequence when you program a channel start/stop time, a

starting method, a reception frequency, and use/disuse of the halftone function

Half-tone recording with 16 gray tone patterns

This function supports 16 gray tone patterns (coarse and fine patterns) and very effective to print out clouds (photographed by a weather satellite)

Fine line compensating circuit

This unique circuit can clearly reproduce fine lines such as map lines and geographical lines

(longitude and latitude lines)

—10-(4)

(5)

GENERAL

Synthesizer receiver capable of memorizing up to 90 frequencies

You can set any reception frequency using keys on the 10-key pad The JAX-9A can memorize up to

90 frequencies (= 9 frequencies per group x 10 groups) You can select, set, and change frequencies easily (for a new broadcasting)

Automatic frequency selection

This function automatically selects the most optimum frequency among nine frequencies in each

group

reception

(6) Built-in clock

(You need not search it manually.) This function is very effective for programmed

The JAX-9A has a clock that can be used as a programming timer and a system clock

1.3 System Components

Standard components

No Name of component Part number Quantity Remarks

I Weather facsimile receiver JAX-9A 1 set

3 Antenna connector 5JAAB00013 1 Connected to the facsimile receiver

7 Facsimile paper for testing 6ZPTS00108 1 Mounted on the facsimile receiver

8 Standard replacement parts 6ZXTS00082 1 set See the next page

10 | AC-DC power supply unit NBA-4045 1 Optional

e The JAX-9A is shipped with the antenna connector and the facsimile paper mounted on it

e The A.C power rectifier makes 100 VAC or 220VAC power supply available to the JAX-9A

—11—

1.5 Overall Connection Diagram

CHAPTER 2 NAMES & FUNCTIONS OF PARTS

functions The functions available to the switch button are marked mee Indicates that the other function ts

on the upper left and upper right corners of the button The available when

function marked on the upper left corner of the button is usually used esced with the (This function is called a "single" function.) The function marked switch

on the upper right corner of the button is used together with the "#"

switch (This function is called a "combined" function.)

Beeps are made when a button on the Operator panel is pressed

A beep is made when the button operation is normally accepted If the button operation is not

accepted, three or more beeps are made

mode is set, the IOC and the scanning speed must be set to those of the broadcasting station

position

An improper IOC may vertically enlarge or shrink a picture

Note:: This button operation is accepted only when the or button is in the ON position

(See Page 39.)

~]5-

NAMES & FUNCTIONS OF PARTS

SCAN Switches the scanning speed in the order of 60, 90, 120, and 240 (and wrapping around to 60) each time

the switch is pressed With an improper scanning speed, the JAX-9A cannot start printing When this

feeding may occur

Note:: This button operation is accepted only when the or switch is in the ON position

(See 4.3.2.)

PH Used together with the #REC to match phases when the facsimile signals are not insynchronism

4.3.3(2).)

ORMAL} and [BRIGHT] each time this button is pressed (See 4.5.1.)

To stop fast paper feeding, press this button once more

4.5.3.)

button again

(See 4.3.1.)

this button is pressed again

4.3.4(3).)

Press this button when ascertaining time or setting correct time -To'stop this function, press this button again

43.4.)

frequency selection Once:this button is pressed, all numeric buttons are used to read a channel When

cleared

(See 4.2.)

synchronization) The operation of this button is accepted only when it is required

status, and so on)

supply is off The power switch is on the rear panel of the JAX-9A

—~16-

Reverses the black and white shades of the original picture if the original picture has white pictures on the

once again (See 4.5.4.)

To use the receiver in the JAX-9A, press the button together with the button once again (See 4.5.2.)

function is turned on, "A" appears in the lower right corner of the LCD

Note: When the "ATT" function is used, the sensitivity of the JAX-9A falls Usually set this button to the OFF position

~17-

NAMES & FUNCTIONS OF PARTS

(3) Moving Parts

PUSH

OPEN

Note: Printing is disabled while the top cover is open

—~18-

NAMES & FUNCTIONS OF PARTS 2.2 LCD Unit

The LCD shows the operating status of the JAX-9A It has two lines of 20-characters long This section

describes general data on the LCD For indication of the "PROG" and Clock modes, see the related items in

recording), and TIMER) The above example shows the Manual Reception mode

576

shows 120

The above example shows "Recording."

shows "22770.0 (kHz).”

the frequency channel 12

@ | Halftone This field shows whether the Halftone Recording function is used The above

example shows that the Halftone Recording function is used

The above example shows that the picture is reversed (to have the black ground)

an external receiver is used

shows the attenuator is used

—19—

S Always use the specified power supply only A higher voltage may cause the product to

malfunction or fire, or give you electric shocks

Do not handle the power plug with wet hands (to eliminate a risk of getting electric shocks)

S Be careful not to fall any wire dust or metallic pieces into the JAX-9A (Otherwise, the product

may malfunction, fire, or give you electric shocks.)

Place the JAX-9A on a solid, stable, and leveled location (If the JAX-9A falls onto the ground or

over a person, the JAX-9A may be broken and you may be injured.)

(1) Turn off the POWER switch and stop power supply to the JAX-9A

(2) Disconnect the antenna cable, the power cable, the BK/AF input cable of the external receiver, and the

grounding cable Ifthe JAX-9A is equipped with a scramble adapter (supported by the Kyodo News Service), disconnect the signal cable from the scramble adapter

e The BK/AF input cable is polarized, check and record the polarities before disconnection

e@ Always use the BK cable when antenna is shared by a transmitter and the like

The BK (Break) input cable breaks the connection of the JAX-9A and the antenna that is shared by the JAX-9A and a radio source such as a transmitter when receiving a BK signal from the radio source for protection of the JAX-9A against the radio waves sent from the radio source

~20—

INSTALLATION

(3) Remove the JAX-9A from the mounting base (by taking the following steps)

@ Press the PUSH OPEN button The top cover opens

@) While pushing the bottom of the front cover against the

facsimile body,

(8) Pull the top of the front cover toward you to open

@® Remove the paper roll

(©) Remove two screws on the bottom of the paper holder

© Pull the facsimile body toward you (in the arrow

direction) until the facsimile body comes off the

@ Remove the mounting base and remount it on the new i Rear guide of the

location with MS bolts or four wood screws mounting base

(4) Reverse the above steps | to 6 of (3) to remount the facsimile body and set the paper roll in it

(5) Reconnect the antenna cable, the power cable, the BK/AF input cable of the external receiver, and the grounding cable

3.3 Changing Display Languages

Basically the JAX-9A uses alphanumeric characters for labels and data on the LCD Japanese characters are also available to the JAX-9A To use Japanese characters, take the following steps:

Œ)

(2)

Changing the button names

Attach button-name labels in Japanese to the tops of corresponding buttons For locations of buttons, see "2.] Operator Panel.”

Changing display languages (for the LCD)

Press L#] L4] Lz|, and buttons on the operator panel in that order, turn off power to the JAX-

9A, wait a moment, then turn on power again (Three beeps are made when you press the

button, but this is not a problem.)

With this operation, data on the LCD is represented in Japanese To go back to the original language, repeat the above step

For more information, see 4.5.6

—~24-INSTALLATION

3.6 Connection of the JJC Decoder (NWF-45)

In addition to normal facsimile weather broadcasting (weather and climatic charts), the JAX-9A can receive pay facsimile broadcasting (facsimile service of newspapers by the Kyodo News Service) To receive the pay broadcasting, you must make a contract with the Kyodo News Service and rent the JIC decoder (NWF-45) from the Kyodo News Service

For connection of the JIC decoder (NWF-45), the JAX-9A must be partially altered Take the steps shown below to connect the NWF-45 (For professional help, call your local JRC distributor.)

(1) Unit to be altered

Control block CKK-523

(2) Procedure to alter

@ Remove the connector P502 (having no cable) from the connector J502 on the controller PCB

(printed circuit board)

Press the button of the facsimile unit and open up the top cover You can see a PCB having five connectors on it inside the facsimile unit Hold the left and right black ends of the rightmost blue connector and pull it out

~25—

INSTALLATION

@ Connect the wires of the NWF-45 cable (that comes with the NWF -45) to pins of the connector P502 as shown below

Connector removed NWF-45 cable P502 from the JAX-9A

@ Connect the NWF-45 and the JAX-9A with the above cable

Connect the connector P502 to the original connector of the JAX-9A Connect the other end of the NWF-45 cable to the signal connector of the NWF-45 (see "5" of the NWF-45 operation manual)

© Refer to Figure 4-2 and Table 1 of the installation procedure that comes with the NWF-45 to make installations

e A wrong connection of wires disables the reception Check the relationship between wire colors and pin numbers

° Test-run the JAX-9A to receive general facsimile broadcasting and pay facsimile broadcasting (by the Kyodo News Service) and make sure that the reception is perfect

~26—

CHAPTER 4 OPERATION

4.1 Setting Receiving Frequencies

The JAX-9A facsimile receiver can receive short-wave facsimile broadcastings (2 MHz to 25 MHz) Each broadcasting station broadcasts identical data on several channels So you can select a channel for optimum pictures Further the propagation of short waves will be greatly affected by environmental

conditions such as receiving locations, days or nights, seasons, and so on Consequently, the optimum

reception frequency will vary and you must reset the frequency

The JAX-9A has an Automatic Frequency Selection function to select a frequency for optimum picture

reception among a group of broadcasting frequencies

4.1.1 Automatic frequency selection

The Automatic Frequency Selection function automatically selects a frequency for optimum picture

reception among a group of facsimile broadcasting frequencies of a single broadcasting station that have been registered

If the reception status of a selected frequency becomes worse, this function automatically re-selects another frequency for optimum picture reception

To use this function, you must register all broadcasting frequencies of a single facsimile broadcasting station for frequency channels of a single group

@® Register a frequency of 3622.5 kHz to frequency channel 01

@ Register a frequency of 7305 kHz to frequency channel 02

@ Register a frequency of 9970 kHz to frequency channel 03

@® Register a frequency of 13597 kHz to frequency channel 04

© Register a frequency of 18220 kHz to frequency channel 05

© Register a frequency of 23522.9 to frequency channel 06

@ Leave the other frequency channels unregistered Just press the button for the frequency channels 07 to 09 to prevent registration of unwanted frequencies

e For registration of reception frequencies, see 4.1.3

e "JMH" is one of the codes for calling facsimile broadcasting stations in Japan (JMH, JMG, etc.)

(4)

Do not register frequencies of two different broadcasting stations to a single channel group If done, you may be able to receive the facsimile signals from the target station

Using the Automatic Frequency Selection function

Call a group channel (representative frequency channel) of a frequency group including the

frequencies of a target facsimile broadcasting station For example, take the following steps to receive and record facsimile signals from the above JMH

@ Press the button then enter |0] [0] The Automatic Frequency Selection function starts to

select a frequency for optimum reception among frequencies of the channel group 00

@) When you want to use this function after the above operation, repeat the above step again

e This function is available when the receiver built in the JAX-9A is used

e Use this function at least one minute before the facsimile broadcasting starts because it takes a little time to automatically select a frequency

® The reception status of the selected frequency is not always the best because

@®) The aerial status (radio wave propagation status) of the selected frequency is not good

@ The aerial status (radio wave propagation status) is good only while the automatic frequency

selection is made Or

@ The aerial status (radio wave propagation status) of the selected frequency becomes worse

gradually

— 28 —

OPERATION

e This function is available to all four reception methods of the JAX-9A mode (AUTO, MANU, #REC

(Forced recording), and TIMER)

e This function works in the following cases:

@ When a group channel is called by the button and numeric keys

(@) When the power switch was turned off in the Automatic Frequency Selection mode and is turned

on in the same mode

(3) When the radio propagation status of the reception frequency becomes worse gradually

-20—

OPERATION

4.1.2 Setting the receiving frequency

Take steps below to set a reception frequency

You can use only the and numeric keys {0] to [9) of the 10-key pad on the operator panel

| CLR |: Clears all key entries made before the frequency value is set

[0] to [9]: Numeric keys to enter a frequency value

The reception frequencies are all represented in kiloherz (kHz)

A reception frequency can have the first decimal place (for 100-Hz digit)

t_, 00-Hz digit For example, a frequency of 7305 kHz of the JMH can be set as follows:

I —¬ Set the [POWER | 1m — The ON indicator lights Š

switch to the @ m—teo

second entered figure appears on the

4.1.3 Registering receiving frequencies

OPERATION

The JAX-9A can store up to 90 frequencies (9 frequencies per group x 10 groups) in memory

You can use only the [CLR], [ENT], [CH], and numeric keys {0] to I9) of the 10-key pad on the

operator panel

[CLR |: Clears all key entries made before the frequency value is set

[o] to [9 Numeric keys to enter a frequency value and a frequency channel

| CHỈ: Sets the Channel Set mode In this mode, numeric keys are used to set frequency channels

ENT: Stores (registers) the entered reception frequency or frequency channel in memory : When this

button is pressed, the frequency channel number is automatically incremented by one:

(1) Registering reception frequencies for automatic frequency selection (Ex 1)

This example registers JMH frequencies to channel group 00

POWER switch on the rear | Position ——

3 Press numeric keys [6] A frequency of 3622.5 kHz is entered

° ° and |5] in this order

channel number is incremented by one second entered figure appears on the

7 Repeat the above steps 3 to 6 to register For example, press numeric keys BỊ

the remaining frequencies [9} [ 7} L0} and [0] in this order to

channel number is incremented by one

9 Press the button to register The | Leave channel 08 unregistered

channel number is incremented by one

channel number is incremented to a channel number (11 in this example) next

to the group channel

se The JMH broadcasting station uses six facsimile broadcasting frequencies Accordingly, the

channel group 00 has six frequencies registered to channels 01 to 06 To prevent channels 07 to 09 from having illegal frequencies registered, just press the button for each of them

e Ifany frequency of another broadcasting station is registered to one of such blank channels, the Automatic Frequency Selection function will work improperly

~32-

OPERATION

(2) Registering reception frequencies for automatic frequency selection (Ex 2)

This example registers JMH frequencies to channel group 30

6 Press the button to register The | The entered frequency is registered to

channel number is incremented by one channel 31

8 Press the button to register The | The entered frequency is registered to

channel number is incremented by one channel 32

i Press the button to register The | Leave channel 38 unregistered

channel number is incremented by one

12 Press the button to register The | Leave channel 39 unregistered

channel number (41 in this example) next

to the group channel

e The JMH broadcasting station uses six facsimile broadcasting frequencies Accordingly, the

channel group 30 has six frequencies registered to channels 31 to 36 To prevent channels 37 to 39 from having illegal frequencies registered, just press the button for each of them:

e Ifany frequency of another broadcasting station is registered to one of such blank channels, the Automatic Frequency Selection function will work improperly

(3) Registering receiving frequencies when the Automatic Frequency Selection function is not used

POWER switch on the rear

Set the | POWER

switch to the position

P| _ P| and 5 in this order

switch to the a a LED

6 Press the button to register The entered frequency is registered to

ENT The channel number is incremented by channel 31

OPERATION

4.2 Calling a Registered Frequency

Take steps below to call a registered reception frequency from memory

You can use only the and numeric keys 0} to [9b of the 10-key pad on the operator panel

[MO]: Sets the Memory Out mode In this mode, numeric keys are used to call a reception frequency

|0] to [9]: Numeric keys to enter a group channel and a frequency channel to be called

(1) Calling a registered frequency when the Automatic Frequency Selection function is used

This example calls one of JMH frequencies stored in memory (see 4.1.3 (1))

switch to the a a LED

The last one of the registered frequencies

OPERATION

(2) Calling a registered frequency when the Automatic Frequency Selection function is not used

This example calls a frequency channel 01

POWER switch on the rear

Set the [POWER] =

Press numeric keys [0] and [1] in this

order to call the frequency channel 01

f} = | 3) 6) 2) 2) | 5 (| 0 1)

The frequency of the channel 01 and the

channel number are displayed

e Initially (when the JAX-9A is powered on), the old frequency (that was displayed just before the JAX-9A was powered off) appears on the LCD However, its channel is not displayed

—~37-

OPERATION

4.3 Setting the Facsimile Receiving Mode

For better reception of facsimile signals, the JAX-9A automatically selects and sets a reception mode (AUTO, MANU, #REC, or PROG) according to the radio propagation condition and the on/off status of the following five signals in the facsimile broadcasting:

® Start signal

@) Phase signal

©) Similarity signal (similar to the phase signal)

() Black signal as wide as the phase signal

®) Stop signal

The phase signal is always required in the AUTO and MANU reception modes Therefore, the above signals @ @ and @ are essential

Below are illustrated the functions of the signals in a facsimile broadcasting

Signals in a facsimile picture

@® Black signal as wide as the

phase signal

® Start signal

@® Similarity signal (Some

broadcasting stations send a

black signal and other do not.)