HP 8559A - 7-9

ADJUSTMENTS
5.19.
LOG AMPLIFIER LOG AND LINEAR ADJUSTMENT (SERIAL PREFIX 2208A)
REFERENCE:
A14 and A15 Schematics
DESCRIPTION:
10
dB/DIV and LIN are adjusted for correct steps and full - screen display translations.
DISPLAY
DIGITAL VOLTMETER SIGNAL GENERATOR
F
UTPUT
ATTENUATOR
FIGURE 53. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTTESTSETUP
EQUIPMENT:
.........................................................
Signal Generator HP 8640B
........................................................
Digital Voltmeter HP 3490A
.................... ...............
Step Attenuator (10 dB/step) r HP 355D, Option H82
.................
Adapter, Type N Male on one end, BNC female on other end
HP 1250
- 0780
....................
Adapter, BNC Male on one end, SMA Male on other end HP 1250-0831
PROCEDURE:
1. Set spectrum analyzer controls
as follows:
..................................................
FREQUENCY BAND GHz .01- 3
..........................................................
FREQ SPM/DIV 1 MHz
.......................................................
RESOLUTION BW 300 kHz
INPUTArnN ............................................................. 10dB
REFLEVELdBm ............................................................ - 50
..............................................................
Amplitude Scale LIN
........................................................
SWEEP TIME/DIV AUTO
.....................................................
SWEEP TRIGGER FREE RUN