HP 8568B iZZiZK, flO%, 1 MHz to 1 kHz bandwidths, Specification *20%, 3 MHz bandwidth, -0,+50%, 300 Hz to 10 Hz (6 dB bandwidths)

4.Impulse and Resolution Bandwidth Accuracy Test

Related Adjustment Impulse Bandwidth AdjustmentsSpecification *20%, 3 MHz bandwidthflO%, 1 MHz to 1 kHz bandwidths-0, +50%, 300 Hz to 10 Hz (6 dB bandwidths)

Description

SYNTHESIZER

LEVEL GENERATOR

P.

A frequency synthesizer and pulse/function generator are used to input pulses to the spectrum analyzer. The amplitude of the pulses is measured, and the impulse bandwidths are calculated for each impulse bandwidth from 3 MHz to 1 kHz. The 6 dB resolution bandwidths are then measured using the spectrum analyzer @iZZiZK~ function. The CAL OUTPUT signal is used as a stable signal source to measure the 6 dB resolution bandwidths.

SPECTRUM ANALYZER

P U L S E / F U N C T I O N

GENERATOR

.

J	EXT	L		816NAL
		OUTPUIT	I
	INPUT			INPUT 9

Figure 4-2. Impulse Bandwidth Test Setup

Equipment Frequency Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 3335A Pulse/Function Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8116A

Procedure 1. Set the frequency synthesizer for a 15 MHz, + 13 dBm output. Connect the output of the frequency synthesizer to the EXT INPUT of the pulse/function generator.

2. Set the pulse/function generator controls as follows:

MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRIG

EXT INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . positive-going

EXT INPUT LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . midrange

OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pulse

LOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OV

HIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.4

WIDTH (WID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ns

DISABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . off

4-4 Option 462