User's Manual

18. 600 MHz Amplitude Adjustment

Assembly Adjusted

Al5 RF Assembly

Related Performance Test

There is no related performance test for this adjustment procedure.

Description

The HP 8566 Spectrum Analyzer is used to monitor the CAL OUTPUT signal of the

HP 8560A. Potentiometer R726 is then adjusted to minimize the displayed noise floor and

thus ensure proper input power to the ECL divide-by-two chip.

Equipment

Spectrum Analyzer

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8566

Adapters

Type N (m) to BNC (f) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1250-1476

Cables

BNC,122

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 10503A

Procedure

1. Set the HP 8560A (LINE) switch off, disconnect the power cord, and remove the analyzer’s

cover. Fold down the Al5 RF and Al4 Frequency Control assemblies. Prop up the Al4

Frequency Control Assembly.

2. Connect the equipment as shown in Figure 2-21.

GNAL

ANALYZER

Al5

SPECTRUM

FREOIJENCY

CONTROL

Figure 2-21. 600 MHz Amplitude Adjustment Setup

3. Reconnect the power cord and set the (LINE) switch on.

BOARD

PROP

SJl3

2-66 Adjustment Procedures