GE Ericsson MASTR II, Описание и инструкции по обслуживанию

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ALIGNMENT PROCEDURE
STEP
METER
POSITION
TUNING
CONTROL
METER
READING PROCEDURE
100 WATT PA
13. Terminate the output power J2 with a 50 ohm watt
meter capable of reading 150 watts.
14. Key the transmitter and set R11 (control board) for
100 watt output.
15. Read and record the DC voltage at feed through
cap C5. This reading can be used for future output
checks.
DO NOT EXCEED 100 watts of output power.
16. Using the test set connected to the Exciter
metering jack and the transmitter keyed, detune
Z102 10 percent from its peak reading. The output
PWR should remain constant at 100 watts. This
check insures ample operating margin.
17. Tune Z102 back to a peak reading on the test set.
Under no conditions should the Exciter be
tuned using the PA output as a level indicator.
The PA control circuits mask Exciter tuning
procedures.
NOTE
851-870 MHz, 100 WATT TRANSMITTER
Issue 2
ALIGNMENT PROCEDURE
STEP
METER
POSITION
TUNING
CONTROL
METER
READING PROCEDURE
EXCITER
1. B
(PHASE MOD)
L103, T101 See Procedure Tune L103 for maximum meter reading. Then tune
T101 for a dip (small) in meter reading.
2. C
(MULT-1)
T102 and T103 See Procedure Tune T102 for maximum meter reading, then tune
T103 for a dip in meter reading.
3. D
(MULT-2)
T104 and T105 See Procedure Tune T104 for maximum meter reading and then
tune T105 for a dip in meter reading.
4. F
(MULT-3)
T106 and C157 See Procedure Tune T106 for maximum meter reading and then
tune C157 for a dip in meter reading.
5. G
(MULT-4)
C159 and Z101 See Procedure Tune C159 for maximum meter reading, and then
tune Z101 for a dip in meter reading.
6. A
(REL OUTPUT)
Z102 Maximum Tune Z102 for maximum meter reading.
7. B
(PHASE MOD)
L103 Maximum Tune L103 for maximum meter reading.
8. C
(MULT-1)
T101 and T102 Maximum In order, tune T101 and T102 for maximum meter
reading.
9. D
(MULT-2)
T103 and T104 Maximum Tune T103 and then T104 for maximum metering
reading.
10. F
(MULT-3)
T105 and T106 Maximum Tune T105 and then T106 for maximum meter
reading.
11. G
(MULT-4)
C157 and C159 Maximum Tune C157 and then C159 for maximum meter
reading.
12. D
(INPUT DRIVE)
Z101, Z102 Maximum Test set connected to Exciter metering jack. Then
alternately tune Z101 and Z102 for maximum
meter reading.
When aligning transmitter, proceed as in-
structed below. DO NOT retune a previously
tuned control unless specifically directed to
do so.
NOTE
LBI-31985 LBI-31985
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