Specifications
REF. CONTROL/INDICATOR FUNCTION
1 FREQUENCY SYNTHESIZER LED GREEN indicates desired frequency is acceptable. RED indicates desired
frequency is out of range.
2 TUNE POSITION
METER/FREQUENCY CONTROL
BOARD MULTIMETER
NOTE - The following assumes S2 on the Frequency Control board is in the
NORMAL position. When in the FREQUENCY CHANGE Mode, the meter
indicates the proper position for the TUNE SERVO. When in the LOW POWER
TUNE or HIGH POWER TUNE Mode, the meter indicates the actual position
of the TUNE SERVO. When in the NORMAL OPERATION Mode, the meter is
turned off. NOTE - If S3 on the Frequency Control board is depressed in any
mode, the meter will indicate the proper position for the TUNE SERVO. NOTE -
If S2 on the Frequency Control board is in the METER position, the TUNE
meter becomes a Multimeter for the Frequency Control board - refer to Figure 3-
7 and Table 3-7 for more information.
3 LOAD POSITION METER When in the FREQUENCY CHANGE Mode, the meter indicates the proper
position for the LOAD SERVO. When in the LOW POWER TUNE or HIGH
POWER TUNE Mode, the meter indicates the actual position of the LOAD
SERVO. When in the NORMAL OPERATION Mode, the meter is turned off.
4 FREQUENCY SELECT SWITCHES Used to select the operating frequency in kHz of 585, 684 or 936kHz.
5 BANDSWITCH DRIVERS FAULT
LED
GREEN indicates normal operation. RED indicates a cable is disconnected, 2L1
switch not in the proper position, or loss of +24Vdc relay supply.
6 TUNE SERVO SWITCH In the normal (center) position, the tuning servo motor is not active. In the
RAISE (upper) position, the tuning servo motor is rotating clockwise (as viewed
from the rear of the transmitter) and the capacitance is decreased. In the
LOWER (down) position, the tuning servo motor is rotating counter-clockwise
(as viewed from the rear of the transmitter) and the capacitance is increased.
7 TUNE SERVO FAULT LED GREEN indicates the tuning servo motor is in the proper position. RED
indicates the tuning servo motor is not in the proper position.
8 LOAD SERVO SWITCH In the normal (center) position, the loading servo motor is not active. In the
RAISE (upper) position, the loading servo motor is rotating clockwise (as
viewed from the rear of the transmitter) and the inductance is decreased. In the
LOWER (down) position, the loading servo motor is rotating counter-clockwise
(as viewed from the rear of the transmitter) and the inductance is increased.
9 LOAD SERVO FAULT LED GREEN indicates the loading servo motor is in the proper position. RED
indicates the loading servo motor is not in the proper position.
10 FREQUENCY CONTROL SUPPLY
FAULT LED
GREEN indicates normal operation. RED indicates failure of a power supply on
the Frequency Control board.
11 NORMAL OPERATION LED Illuminated GREEN only when in this mode.
12 FREQUENCY CHANGE LED Illuminated YELLOW only when in this mode.
Table 3-1. Frequency Control Panel
Controls and Indicators
888-2339-002 3A-3
WARNING: Disconnect primary power prior to servicing.