HP 8340B Manual page 226

PULSE ADJUSTMENTS (Cont'd)
5-18.
The following adjustments are required if any of the following four
assemblies have been replaced or if any of the controls listed after each
assembly have been adjusted or replaced.
All High Band Detector (Bands 1
A21 Pulse Modulator Assembly, A21R45 (ON DELAY-INT), A21R47 (OFF
DELAY)
A25 ALC Detector Assembly, A25R58 (BAL)
A26 Linear Modulator Assembly, A26R7 (BAL)
Equipment
Synthesized Sweeper
Pulse Generator
Oscilloscope
10:1 Divider Probe
Mixer
Digital Voltmeter
Amplifier
Low Pass Filter
10 dB Attenuator
Adapters:
APC 3.5 (f) to APC 3.5
(required if OUT is an HP 8340B)
APC 3.5 (f) to Type-N
(required if OUT is an HP 8341 B)
BNC (f) to Dual Banana
BNC Tee
Procedure
If the OUT is equipped with Option 006, Delete Pulse Modulation, proceed directly to step 16.
DETECTOR SAMPLE AND HOLD BALANCE ADJUSTMENT
1. Connect equipment as shown in Figure 5-64. Allow at least 30 minutes warmup.
The A21, A25, and A26 PC boards must not be placed on extender
boards in this adjustment procedure. Also, the cables connected to
detectors All and A12 are especially designed for low capacitance and
only these cables may be used during adjustment procedures.
2. Set the oscilloscope as follows:
DISPLAY
MODE
MAGX5
CH A
CHB
TIME/Div
Connect CH A probe to A26TP2 (DET)
5-122 Adjustments
NOTE
4)
-
(f)
(in)
NOTE
HP 8340B Opt. 001
HP 8012B
HP 1741A
HP 100040
HP P/N 0955-0307
HP 3456A
HP 8447F
HP P/N 91 35-0260
HP 8493C Option 010
HP P/N 5061-5311
HP P/N 1250-1 744
HP P/N 1251 -2277
HP P/N 1250-0781
CHOP
MAIN
ON
0.005 V/Div AC COUPLED
5V/Div500hms
2 jisec
HP 8340B/41B