Pulsar TC-10B, User Manual

Page: 61 / 190

JU4 – Sense of Input Low-Level
• NORM (+)
• INVERT(-)
JU5 – Sense of Input Carrier Stop
• NORM (+)
• INVERT(-)
JU6 – Sense of Input Carrier Start
• NORM (+)
• INVERT (-)
JU7 – Priority Start or Stop
• STOP
• START
JU8 – Carrier Stop Circuit
OUT Normally in this position
IN When used with KDAR or
SKBU or applications that use
a common start/stop keying
circuit.
2. Two push button switches are provided for
test purposes:
• The top push button is marked “HL” for
High-Level power (10W typical)
• The bottom push button is marked “LL” for
Low-Level power (1W typical)
Each push button is recessed, and can be
activated by sliding an object (e.g., a pen or
pencil) through each push button access
location on the Keying Module front panel.
3. Check the LEDs at the bottom of the Keying
Module control panel for indication of the
keying condition: “HL” (High-Level key
output), “LL” (Low-Level key output), and
“V” (Voice-Level key output).
The JU7 STOP position inhibits the High-
Level output, Low-Level output, and the
Voice-Level output.
Both the Low-Level and High-Level outputs
inhibit the Voice-Level output.
4. Insert the Keying Module back into the
TC–10B chassis.
5.3 Select TC–10B Receiver
Output
1. Remove the Receiver Output Module from
the TC–10B chassis and set jumpers JU1 and
JU2 according to the following options:
JU1
1) 48V
2) 125/250V
JU2
1) 48V
2) 125/250V
2. Insert the Receiver Output Module back into
the TC–10B chassis.
5.4 Select TC–10B RF Output
Impedance
1. Configure the RF Interface 2-Wire
impedance. Remove the RF Interface Module
from the TC–10B chassis and configure the
output impedance by setting the jumpers as
follows:
• JU4, when set, provides 50 Ω
• JU3, when set, provides 75
Ω
• JU2, when set, provides 100 Ω
2. Select 2- or 4-wire Receiver input, using
jumpers JU1 and JU5 as follows: IN position
for 2-wire; OUT position for 4-wire. The
normal configuration for the TC-10B is 2-
wire.
3. Set jumper JU6 to the desired Receiver sensi-
tivity range.
4. Insert the RF Interface Module back into the
TC–10B chassis.
October 2003 Page 5–3
Chapter 5. Installation / Adjustment Procedures
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