Table 10-1. Controls and indicators, RFL 9785 Output Filter Modules
Component
Name/
Function
Designator
Description
C26
Trimmer capacitor
Adjusts phase of voltage across one of the transformer secondaries. For
factory use only
J1 Jumper
J2 Jumper
J3
Jumper
Passband frequency select jumpers.
J4
Jumper
See Table 10-2, and Figures 10-2 and 10-3
J5 Jumper
J6 Jumper
J7 Jumper
R8
Potentiometer
Adjusts circuit gain and calibrates the signal level measurement (VA) for a
given transmitter output power level. For factory use only.
R9
Potentiometer
Adjusts amplitude of voltage across one of the transformer secondaries. For
factory use only.
R32
Potentiometer
Potentiometer R32 is tuned at the factory, and is not required to be adjusted
in the field under normal operating conditions. If the carrier frequency is
changed in a system it is possible that the SOE will not be reporting the TX
power accurately. At that point the potentiometer can be adjusted such that
the reading matches actual measurements.
R42
Potentiometer
Calibration attenuator. For factory use only.
TP1
Test point
Filter common
TP2
Test point
Filter output
TP3
Test point
Filter input
TP4
Power supply test point
+ 5 Vdc
TP5
Power supply test point
+ 15 Vdc
TP6
Power supply test point
- 15 Vdc
TP7
Power supply test point
+ 12 Vdc
TP8
Power supply test point
Power supply common
TP9
Test point
DC signal, which represents the nominal transmitter signal level. For
factory use only
TP10
Test point
DC signal VAMP. Represents the voltage equivalent of the nominal
transmitter signal amplitude. For factory use only.
TP11
Test point
Reflected power measurement signal. For factory use only.
TP12
Test point
DC signal QVRP (quadrature component of the reflection coefficient) For
factory use only
TP13
Test point
DC signal IVRP(in-phase component of the reflection coefficient) For
factory use only.
RFL 9785
RFL Electronics Inc.
June 18, 2009
10-4
(973) 334-3100