Pulsar TCF-10B, System Manual, Page: 76 / 249

5.6.3 Place Jumpers as Required
Place jumpers and switches as required by the
final application (see 5.3 or 5.5). Also set the four
rotary switches for operation at the proper
frequency.
5.7 TCF–10B Transceiver Tests
5.7.1 Voice Adapter in System
Check the preliminary settings (earlier in this
Section): 5.3.1 thru 5.3.5 and 5.5.1 thru 5.5.6. If
The Voice Adapter Module is part of system, set
the following jumpers:
JU1 IN
JU2 IN
JU3 IN
JU4 TCF
JU5 N.O.
5.7.2 Power Supply Module Tests
Perform steps 1 through 6 of Section 5.4.1, Power
Supply Module Tests,
except use the current
values in Section 5.4.1 Step 5.
5.7.3 Transmitter Module Tests
Perform the steps in Section 5.4.2, Transmitter
Tests.
5.7.4 Receiver Module Tests
Perform the steps in Section 5.6.2, Receiver Tests.
5.7.5 Voice Adapter Module Tests
(If Supplied)
1. Plug in the handset to the front panel (TJ1);
connect it to the rear panel (TB5) if it is a
remote handset. Key the carrier set with the
push-to-talk switch. The Transmitter should
be keyed at voice-level (4.3 W when high-
level is 10 W).
2. The front control panel adjustments: “MIC.
SENS” (R63) and “RECEIVE AUDIO” (R24)
are factory set to nominal levels. You may
turn the “MIC. SENS” adjustment clockwise
to compensate for a low-efficiency micro-
phone.
You may turn the “RECEIVE AUDIO”
adjustment as required to obtain a desirable
listening level.
3. After adjusting for 63 mVrms (5.6.2
“Receiver Module Tests: Preliminary Steps” –
Receiver Sensitivity, Step 5), set the Signal
Generator (HP3325A to 5.02 MHz and the
output level to 1 V P-P. Remove the 5 MHz
crystal on the receiver. Inject the 5.02 MHz
between common (A/C-30, 32) and the
junction of R69 and R24. Use a two-channel
oscilloscope and monitor the junction of R69
and R24 and connector pin 24A with A/C-30,
32 as common. With one volt PP applied at
R69/R24, adjust R67 for .33 to .47 volt PP at
the output 24A. (R67 is factory adjusted and
should not need readjustment unless there is
component failure). Remove the test
equipment and plug in the 5.0 MHz crystal.
Page 5–14 April 1997
TCF–10B System Manual
Technologies, Inc.
!
CAUTION
ALWAYS TURN DC POWER “OFF” BEFORE
REMOVING OR INSTALLING MODULES IN THE
TCF–10B CHASSIS.