5-27A. MARKER GAIN ADJUSTMENT (Fine Tune) (UPDATES)
REFERENCE:
SERVICE SHEET:
A8.
DESCRIPTION:
Fine tune adjustments of gain peak markers and eliminate unwanted glitches between markers.
EQUIPMENT:
Function Generator
...................................................
HP 33
12A
Swept Amplitude Analyzer
.............................................
HP 8755C
............................................................
Detector HP11664B
10 dB Attenuator
..............................................
HP 8491B Opt. 010
Oscilloscope
.........................................................
HP
1740A
FUNCTION GENERATOR
SCALAR NETWORK
ANALYZER
8NC
TEE
Figure 5-38a. Marker Gain (Fine Tune) Adjustments Test Setup
PROCEDURE:
1. Connect equipment as shown in Figure 5-38a.
2.
Set instrument controls as follows:
8350A/B SWEEP OSCILLATOR
CF ......................................................... 15MHz
CF
STEP SIZE
...............................................
10 MHz
AF
.........................................................
10 MHz
[LnMOD]
......................................................
ON
SWEEPTIME
.................................................
17ms
83522A RF PLUG-IN
UPDATES
POWER LEVEL
.............................................
.9
dBm
MARKERS
..........................................
AMPTD
1
MHz
UPDATES APPLY TO ALL SERIALS