HAL ST-6000 DEMODULATOR
CONTENTS
1.
INTRODUCTION
1-1
2.
SPECIFICATIONS
2-1
3.
INSTALLATION
3-1
3.1
Initial Inspection
3-1
3.2
Use of Factory Supplied Cables
3-1
3.2.1 Audio Input Connection
3-1
3.2.2 Audio Output Connection
3-2
3.2.3 Loop 1 Cable Connection
3-2
3.2.4 Motor Power Connection
3-2
3.2.5 KOS Cable Connection
3-7
3.2.6 Separate Keyboard Connection
3-10
3.2.7 RS-232C Cable Connection
3-10
3.2.8 CW-ID Key Cable Connection
3-10
3.2.9 AC Power Cord Connection
3-10
3.2.10 Ground Connection
3-10
3.3
Alternate Connection to the ST-6000
3-11
3.3.1 Use of External Loop Supplies and Multiple Loop Circuits 3-12
3.3.2 Separate Printer and Keyboard Connection
3-12
3.3.3 Full Duplex Operation of the ST-6000
3-12
3.3.4 External Data Processing Equipment
3-15
3.3.5 External Oscilloscope Connections
3-15
3.3.6 Tone Keyer Control Connections
3-15
4.
OPERATION
4-1
4.1
Front Panel Controls and Indicators
4-1
4.2
Simplified Operating Procedure
4-2
4.3
Reception of Radio Teleprinter Signals
4-2
4.3.1 Receiver for FSK Reception
4-3
4.3.2 Receiver for AFSK Reception
4-4
4.3.3 Tuning a RTTY Signal
4-4
4.4
Use of the ATC Circuit
4-5
4.5
Use of the DTH Circuit
4-5
4.6
Use of the Limiter Switch - FM vs. AM
4-6
4.7
Use of the SENSE Switch
4-6
4.8
Use of the PRINT Switch
4-6
4.9
The KOS Circuit
4-7
4.10
Use of the Autostart Circuitry
4-7
4.11
Antispace Circuitry
4-8
4.12
Tone Keyer Circuit
4-8
4.13
Transmitting Radio Teleprinter Signals
4-9
4.13.1 Transmitting FSK Signals
4-9
4.13.2 Transmitting AFSK Signals
4-11
4.13.3 Adjustment of the ST-6000 Tone Keyer
4-11
Summary of Contents for ST-6000
Page 1: ...ST 6000 FSK DEMODULATOR...
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Page 17: ...3 6 Figure 3 DS 2000 and ST 6000 System Connection Schematic...
Page 19: ...3 8 Figure 3 2 Loop Connections to the ST 6000...
Page 20: ...3 9 Figure 3 3 RS 232 I O Connections to the ST 6000...
Page 24: ...3 13 Figure 3 5 Alternate Loop Connections...
Page 25: ...3 14 Figure 3 6 Connections for the ST 6000 for Full Duplex Operation...
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