Wavetek 3000 Instruction Manual page 223

MANUAL CHANGES - MODEL 3000 (Cont'd)
CAUTION : If trimmers A and B are adjusted too far, the trimmer
screws may fall down into the module . Misadjusted trimmers may cause
faulty phase-locked loop 2 operation .
If the M32A leveler voltage cannot be correctly adjusted, proceed as
follows . Disconnect the module cable W9 on the 1440 MHz output
connector on the M30-# . This connector is next to the A trimmer .
Connect the 1440 MHz output to the RF input of a spectrum analyzer,
and note the 1440 MHz comb line amplitude . It should be -12 dBm or
greater . The adjacent
1320 and 1560 MHz comb lines should be at
least 20 dB below the 1440 MHz comb line . Adjust trimmers A and B
only if the comb lines are not as stated above . Remove the spectrum
analyzer input,
and reconnect cable W9 to the 1440 MHz output
connector .
Set the Leveler/Indicator switches to 239 .000 MHz, and note that the
DVM reading is still within the above limits .
If correct M30-# comb lines are obtained, and the M32A leveler is
incorrect, the M32A module or cable W9 is faulty . If, after
adjustment, the M30-# comb lines are incorrect, the M30-# is faulty .
If replacement modules are available, they may be substituted to
correct the fault . The M30---# must have the correct dash number .
Rev D
A programmable attenuator (part number 1113--40--0144) will replace the
10/22/86
rotary attenuator currently used in the Model 3000 Signal Generator .
PIN 3469
The following manual changes must be performed :
Section 6 :
Parts List 1010-00--0013, SGL GEN 3000 :
Delete the line that starts with
reference designator "14" and
describes "Atten, 50130-01" . This item is
the rotary attenuator
being replaced . The programmable attenuator will be listed as the
"50130
Replacement" on the Chassis Assembly (part number
1111-00-0005) of the Model 3000 . The parts list for the chassis
assembly is shown below .
CHASSIS, 3000 1111--00-0005 REV . X
REFERENCE PART ORIG--MFGR--
MFGR WAVETEK NO . QTY
DESIGNATORS DESCRIPTION PART-NO
AT01 50130 REPLACEMENT 5PI30SS18 W-I
1113--40--0144 1 .000
PS01 PWR SUPPLY,DPS2A DPS2A W-I 1115--00--0034 1 .000
AZ18 CHAS PLATE ASSY CHAS PLATE W-I 1216--00-0030
1 .000
ZA19 FP ASSY,3000 3000-FP W-I 1216-00-0029 1 .000