Pulsar TCF-10B, System Manual, Page: 138 / 249

13.1 RF Interface Module
Description
The RF Interface Module, used with the
TC–10B/TCF–10B, has several functions:
• Receives RF input from 10W PA Module.
• Matches output impedance at 50, 75, or
100 ohms.
• Low-pass filter covers RF spectrum up to
550 kHz.
• Permits 2- or 4-wire operation.
• Protects against line surges with a gas tube
device.
13.1.1 RF Interface Control Panel
(This panel is shown in Figure 1-1.)
Operator controls consist of Test Jacks:
TJ1 Line In
TJ2 Line Common
TJ3 Receiver In
TJ4 Receiver Common
13.1.2 RF Interface PC Board
(The RF Interface PC Board is shown in
Figure 13-1.)
Operator controls are as follows:
Matching Impedance Jumpers
JU4 50 ohms
JU3 75 ohms
JU2 100 ohms
2-wire or 4-wire RF Termination
JU1/JU5 “IN” 2-wire
JU1/JU5 “OUT” 4-wire
Attenuator Override Jumper (JU6)
NORM Sensitivity 70 Vrms at 5,000 ohms
HIGH Sensitivity 17 Vrms at 1,000 ohms
Copyright © 1997 Pulsar Technologies, Inc.
Chapter 13. RF Interface Module
13
Schematic 1609C32-8
Parts List 1609C32-8