RFL Electronics 9780 - Table 18-5. Controls and Indicators, RFL 9780 Dual Hybrid Module

RFL 9780 RFL Electronics Inc.
September 8, 2001 18-20 (973) 334-3100
Table 18-5. Controls and indicators, RFL 9780 Dual Hybrid Module
Component
Designator
Name/Description Function
J1 Jumper Selects internal or external balancing network (A = internal, B =
external)
J2 Jumper Enables the protection circuit with current limiting. The “IN” position
enables current limiting. The “OUT” position disables current limiting.
J3 Jumper Enables 50 Ohm termination. The “IN” position enables the
termination. The “OUT” position disables the termination.
J4 Jumper Hardwired for dual hybrid
J5 Jumper Hardwired for dual hybrid
SW1 Switch Coarse adjustment for balancing network
R4 Potentiometer Fine adjustment for balancing network
TP1 Test point Combined Send High (orange)
TP2 Test point Combined Send Low (orange)
TP3 Test point Line High (orange)
TP4 Test point Line Low (orange)
TP5 Test point Receive High (green)
TP6 Test point Receive Low (yellow)
TP7 Test point Transmit CH1 High (red)
TP8 Test point Transmit CH1 Low (white)
TP9 Test point Transmit CH2 High (green)
TP10
Test point Transmit CH2 Low (yellow)