
Monitor between TJ1 and TJ3 with a
selective Level voltmeter (or equivalent)
Proper input must be:
• (G01) 1,200 Hz bandwidth (> 15 mV rms)
• (G02) 600 Hz bandwidth, > 5 mV rms
• (G03) 300 Hz bandwidth, > 5 mV rms
For normal operation, this input signal should be
³
15 dB above the threshold level.
Monitor between TJ1 and TJ2
Proper input should be:
• (G01) 1,200 Hz bandwidth (72
µ
V rms)
• (G02) 600 Hz bandwidth (24 mV rms)
• (G03) 300 Hz bandwidth (24 mV rms)
You may adjust this level with the Level Adjust
Attenuator (R3).
14.3.2 Output Signal
You can check the output signal (20 kHz) at TP5
or pin A-28. When the input threshold voltage is
set per the paragraph “Monitor between TJ1 and
TJ3 with a selective Level voltmeter (or equiva-
lent)” above, The 20 kHz output should be 63 mV
rms. If there is no voltage output at 20 kHz, you
can perform the tests described below.
Synthesizer
The 5 MHz crystal oscillator level should be 560
mV rms at pin 12 of the PC Board connector (J1).
Injection
The injection voltage between TP2 and TP3
should be 3.5 Vp-p; the injection frequency
should be 5.02 MHz plus the channel frequency.
This differential input is measured from TP2 to
TJ3 (common) and from TP3 to TJ3 (common). If
the injection voltage is low or non-existent, you
can remove the Synthesizer to determine if the
problem is in the Synthesizer or I
1
and/or I
2
.
When removing the Synthesizer, you must be
careful to keep the hold-down screws captive.
Unscrew the three Synthesizer hold-down screws
partially and partially unplug the Synthesizer.
Continue this procedure until the Synthesizer is
completely unplugged. Do not remove any of the
screws completely (about 8 turns should be
enough).
You may apply a 5.02 MHz plus the channel
frequency signal between Synthesizer connector
(J3) pins 2 and 3 to check the operation of I
1
, I
2
,
and the injection filter. Use the variable capacitor
(C19) to adjust for maximum output at TP2/TP3.
The 5.02 MHz plus the channel frequency signal
should consist of the following:
• Two 5 Vp-p square wave signals, 180
degrees out-of-phase (reference to ground),
or
• With the additional circuitry, as shown in
Figure 14-1, one 10 Vp-p square wave
signal may be used.
Page 14–4
April 1996
TCF–10B System Manual
Technologies, Inc.
External Generator
TJ3 or A30
(10Vp-p square wave)
J3 Pin 2
J3 Pin 3
25
Ω
25
Ω
~
Figure 14–1. Additional Circuitry at Test Jack (TJ3).
NOTE
If the foregoing levels are correct, but the
Receiver does not function, place the
Receiver Module on an extender board.
Содержание TCF-10B
Страница 2: ......
Страница 19: ...Figure 1 1 TCF 10B Transceiver Set 1355D19 Sheet 1 of 4 April 1997 Page 1 5 Chapter 1 Product Description 1 ...
Страница 21: ...April 1997 Page 1 7 Chapter 1 Product Description 1 Figure 1 3 TCF 10B Receiver Only Set 1355D19 Sheet 3 of 4 ...
Страница 32: ...Page 1 18 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Страница 49: ...December 1996 Foigure 2 15 TCF 10B Catalog Numbers Module Style Numbers 1355D19 Page 2 17 ...
Страница 53: ...Page 3 4 April 1997 TCF 10B System Manual Technologies Inc Figure 3 2 Cable Termination Diagram 9651A13 ...
Страница 57: ...Page 3 8 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Страница 58: ...April 1997 Figure 3 3 TC 10B TCF 10B Mechanical Outline Drawing 1354D48 Page 3 9 ...
Страница 59: ...Page 3 10 Figure 3 4 TCF 10B Connection Drawing and Jumper Options 2064D87 Sheet 1 of 2 April 1997 ...
Страница 60: ...April 1997 Figure 3 5 TCF 10B Connection Drawing and Jumper Options 2064D87 Sheet 2 of 2 Page 3 11 ...
Страница 62: ...Page 4 2 January 1996 TCF 10B System Manual Technologies Inc Figure 4 1 Extender Board ...
Страница 88: ...Page 6 12 April 1997 TCF 10B System Manual Technologies Inc 8 RECEIVER LOGIC ...
Страница 89: ...April 1997 Page 6 13 Chapter 6 Routine Adjustment Procedures 6 ...
Страница 95: ...April 1997 Figure 7 1 TCF 10B Functional Block Diagram 1354D13 Page 7 5 ...
Страница 103: ...Page 9 4 January 1996 TCF 10B System Manual Technologies Inc Figure 9 2 TC 10B TCF 10B Power Supply Schematic 1617C39 ...
Страница 110: ...January 1996 Page 10 5 Chapter 10 Keying Module 10 Figure 10 1 TCF 10B Keying PC Board 1606C50S ...
Страница 112: ...January 1996 Page 10 7 Chapter 10 Keying Module 10 Figure 10 3 TCF 10B Keying Schematic 1606C50 ...
Страница 117: ...Page 10 12 January 1996 TCF 10B System Manual Technologies Inc USER NOTES ...
Страница 122: ...April 1997 Page 11 5 Chapter 11 Transmitter Module 11 Figure 11 1 TC 10B TCF 10B Transmitter PC Board 1500B10 ...
Страница 123: ...Page 11 6 Figure 11 2 TCF 10B Transmitter Schematic 1355D71 April 1997 ...
Страница 124: ...April 1997 Page 11 7 Chapter 11 Transmitter Module 11 Figure 11 2 TCF 10B Transmitter Block Diagram 1610C09 ...
Страница 129: ...Page 11 12 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Страница 132: ...January 1996 Page 12 3 Chapter 12 10W PA Module 12 Figure 12 1 TC 10B TCF 10B 10W PA PC Board 1495B73 Sheet 5 of 7 ...
Страница 133: ...Page 12 4 January 1996 TCF 10B System Manual Technologies Inc Figure 12 2 10W PA Schematic 1606C33 ...
Страница 143: ...Page 13 6 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Страница 167: ...Page 14 24 April 1996 TCF 10B System Manual Technologies Inc USER NOTES ...
Страница 188: ...16 Chapter 16 Receiver Logic Module April 1997 Page 16 7 Figure 16 7 Phase Comparison Functional Block Diagram ...
Страница 189: ...April 1997 Figure 16 7 2 Frequency Directional Comparison Functional Block Diagram Page 16 7 ...
Страница 190: ...Page 16 8 Figure 16 8 3 Frequency Directional Comparison Functional Block Diagram April 1997 ...
Страница 204: ...April 1997 Figure 16 11 TCF 10B Receiver Logic Schematic CF30RXLMN Sheet 1 of 3 Page 16 21 ...
Страница 205: ...Page 16 22 Figure 16 12 TCF 10B Receiver Logic Schematic CF30RXLMN Sheet 2 of 3 April 1997 ...
Страница 206: ...April 1997 Figure 16 13 TCF 10B Receiver Logic Schematic CF30RXLMN Sheet 3 of 3 Page 16 23 ...
Страница 214: ...Page 17 8 January 1996 TCF 10B System Manual Technologies Inc USER NOTES ...
Страница 220: ...Page 18 6 April 1997 TCF 10B System Manual Technologies Inc Figure 18 1 TC 10B TCF 10B Voice Adapter PC Board 1495B79 ...
Страница 223: ...April 1997 Page 18 9 Chapter 18 Optional Voice Adapter Module 18 Figure 18 4 TC 10B Interconnecting Diagram 7833C63 ...
Страница 224: ...Page 18 10 April 1997 TCF 10B System Manual Technologies Inc Figure 18 5 TC 10B Connections for Alarm Circuit 7833C63 ...
Страница 232: ...Page 18 18 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Страница 239: ...January 1996 Page 19 7 Chapter 19 Optional Trip Test Unit TTU 19 Figure 19 4 Transmitter Board 1610C01 ...
Страница 242: ...Page 19 10 January 1996 TCF 10B System Manual Technologies Inc Figure 19 7 Table 19 1 Timing Diagram ...
Страница 243: ...January 1996 Page 19 11 Chapter 19 Optional Trip Test Unit TTU 19 Figure 19 7a Table 19 1a Timing Diagram ...