TONO O-350 Manuale utente
TONO
COMMUNICATIONS COMPUTER
Θ- 350
INSTRUCTION MANUAL
TONO CORPORATION
98 MOTOSOJA-MACHI, MAEBASHI-SHI, 371. JAPAN
TABLE OF CONTENTS
1. PRECAUTIONS ................................................................ 1
2. FEATURES ....................................................................... 2
3. LOCATION AND FUNCTION CONTROLS ....................... 3
4. ACCESSORIES SUPPLIED ............................................. 5
5. CONNECTION .................................................................. 5
BASIC SYSTEM ................................................................ 5
i) Power Supply
ii) TV set
iii) Receiver
EXPANDED SYSTEM ....................................................... 6
i) Oscilloscope
ii) Printer
6. OPERATION ..................................................................... 8
i) Preliminary Setting .................................................... 8
ii) Procedure to Power Up Equipment ........................... 8
iii) CW (Morse) Operation ............................................... 9
iv) RTTY (Baudot) Operation ......................................... 10
v) ASCII Operation ........................................................ 12
vi) Special Functions ...................................................... 12
7. MAINTENANCE .................................................................14
8. SPECIFICATION ............................................................... 15
9. I/O CIRCUIT ...................................................................... 16
TONO Θ-350 INSTRUCTION MANUAL
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1. PRECAUTION
1. Before operating the set, please read this INSTRUCTION MANUAL thoroughly.
2. Take care to properly connect in the connection to the input circuits and output circuits. Input
signal and load should be within the ratings.
3. Voltage of DC power supply should be within the range of DC 11 V --- 14 V.
4. When the input impedance of the TV set is 300 ohms, (not 75 ohms) put a matching transform-
er of 75 ohms : 300 ohms between the Theta-350 and the TV set.
5. The Theta-350 should be installed at a well-ventilated dry place not exposed to the direct rays
of the sun with special care for heat radiation.
6. Built-in demodulator can be used with 150 Baud maximum.
TONO Θ-350 INSTRUCTION MANUAL
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2. FEATURES
1. Communications Computer Θ-350
Due to the most up-to-date computer technology, one piece of equipment can now handle re-
ceiving in CW, RTTY and ASCII.
2. VHF and Composite video output provided
Both a home TV set and video monitor outputs are provided for display purposes.
3. Printer interface
Centronics para. Compatible interface enables easy connection of a low-cost dot printer for
hard copies. Can be connected directly with HC-800 & HC-900.
4. Wide range of receiving speeds
Automatic CW speed adjustment and 8 Communication speeds for RTTY and ASCII. The multi-
ple speed feature makes the Θ-350 ideal for Amateur, business and commercial use.
5. Built-in demodulator for high performance
Three-step shift (either 170 Hz, 425 Hz, 850 Hz) can be obtained using either High Tones or
Low Tones. Manual adjustment is available by FINE TUNING Control.
6. Anti-Noise
A new anti-noise circuit prevents garbled message when there is no signal.
7. Large capacity display memory
The two-page display memory contains 32 characters × 16 lines per page. Page selection is
operated via the keyboard.
8. WORD-WRAP-AROUND function
Word-wrap-around prevents the last word of the line from splitting in two.
9. MARK-AND-BREAK (SPACE-AND-BREAK) system
Either mark or space tone can be used to copy RTTY.
10. Monitor circuit
A built-in monitor circuit with an automatic receive switch enables checking of the receiving
state. It is possible to check the output of the mark filter, the space filter and AGC amplifier prior
to the filters.
11. CW practice function
The Θ-350 reads data from the key and displays the characters on the screen.
12. Cross-pattern checking output terminal
Provision has been made for attachment of an oscilloscope to aid tuning. This supplements the
tuning LED and audio monitor provided in the system.
TONO Θ-350 INSTRUCTION MANUAL
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3. LOCATION AND FUNCTION CONTROL
Fig. 1
i) FRONT PANEL
No. Name Function
1 POWER switch
2 AF switch [AGC] output from AGC can be monitored.
[MARK] or [SPACE] output from respective filters can be monitored
3 AF volume control Controls the volume of a monitor speaker
4 SPACE indicating LED Indicates space of input signal
5 FINE tuning control Provides the fine tuning of shift width in receiving in BAUDOT and
ASCII mode
6 MARK indicating LED Indicates mark of input signal
7 TONE switch Indicates High Tone or Low Tone in BAUDOT and ASCII mode
8 SENSE switch Changes the polarity of MARK/SPACE in input
9 MODE switch For mode selection
10 SHIFT switch Sets the shift width in BAUDOT and ASCII mode
11 INPUT switch [TTL] obtains input from INPUT TTL jack
[AF] obtains input from INPUT-AF
12 ANTI-NOISE switch Helps to prevent garble when there is no signal
13 LETTER indicating LED Indicates Letter case in RTTY
14 FIGURE indicating LED Indicates Figure case in RTTY
15 RESET key Put the set in the initial state
Table 1
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Fig. 2
ii) BACK PANEL
No. Name Function
1 PHONE jack Connect with an earphone
2 VIDEO RF jack Connect with a home TV set
3VIDEO COMPOSITE
jack Connect with a video monitor
4 POWER supply cord DC 12 V in
5 OSCILLO SPACE jack Oscilloscope should be connected to this jack for space output for
cross-pattern.
6 OSCILLO MARK jack Oscilloscope should be connected to this jack for mark output for
cross-pattern.
7 INPUT-AF jack Connect to EXT SP terminal or line output of the receiver
8 INPUT-TTL jack For non-modulated signals in CW, BAUDOT or ASCII and when
using with a hand key.
9 PRINTER CABLE
OUTLET
Table 2
TONO Θ-350 INSTRUCTION MANUAL
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4. ACCESSORIES SUPPLIED
Instruction Manual ............... 1
Pin Plug .............................. 4
Earphone Plug .................... 1
Coaxial Cable ..................... 4 m
5. CONNECTION
BASIC SYSTEM
i) Power Supply
Before connecting a power lead to your DC power supply, the setting of the voltage must be
within the range of DC 11 V – 14 V. After confirming that that the DC source switch and the
POWER switch of the Θ-350 indicates OFF, connect a red power lead of the Θ-350 to a
plus (+) terminal of the DC power source; a black power lead to a minus (–) terminal.
ii) TV Set
1. Solder an ancillary coaxial cable and a pin plug as shown in Fig. 3. After having sol-
dered, connect the pin plug to the RF pin jack of the Θ-350 and the other end of the
coaxial cable to an antenna terminal of a home TV set. Tune TV set to CH 4 (CH 3
in USA).
or 2. Connect the pin plug to COMPOSITE pin jack for a display monitor.
iii) Receiver
If you use a transceiver for receiver, make sure SWR is as flows to enable correct opera-
tion:
OUTPUT SWR
10 W --- 1,5
10 W – 100 W --- 1.3
100 W – 500 W --- 1.1
Table 3
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EXPANDED SYSTEM
i) Oscilloscope
Output impedance for oscilloscope is 200 kΩ. Use an oscilloscope of which input impedance
is over 1 MΩ. Output for oscilloscope is about 1.2 V
p-p
. Large cross pattern is not obtain-
able without amplifier in orizontal amplifier of the oscilloscope.
ii) Printer
Connect a printer to CN6 pin header on CPU board. The fan-out of each pin is 5 standard
TTL loads. Avoid overload. When READY* is "L" level, timing of data for printer is as fol-
lows:
Fig. 4
When READY* is " " level, the port for printer holds previous data.
Any printer with centronics Compatible interface can be connected directly with the Θ-350.
We recommend the TONO Dot Matrix Serial Impact Printer model HC-800 and HC-900,
which are easy to connect by its special cable connector for the Θ-350. (Refer to page 16.)
TONO Θ-350 INSTRUCTION MANUAL
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Fig. 5
TONO Θ-350 INSTRUCTION MANUAL
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6. OPERATION
i) Preliminary Setting
Θ-350
POWER sw OFF
AF vol. Medium
MODE sw {as required}
SENSE sw NORM
ANTI-NOISE sw {as required}
INPUT sw AF
AF sw AGC
FINE tuning control Medium
TONE sw {as required}
SHIFT sw (any place) When in BAUDOT mode,
select the proper shift.
DC Power Supply
POWER sw OFF
TV set
POWER sw OFF
VHF Channel (home TV) CH4 (Australia & Continental)
CH3 (USA)
Transceiver (Receiver)
MODE sw
According to the MODE sw setting of
the Θ-350
w/o FSK function LSB setting is re-
quired for RTTY
POWER sw OFF
AF volume Set it so as to make the input voltage
into the Θ-350 ranging from 50 mV to
1 V. (ordinary listing volume)
Table 4
ii) Procedure to power up equipment
Put the power switch ON of: 1. TV set
2. DC power supply
3. Θ-350
4. Transceiver
Indice
