2. Display Adjustment

Assembly Adjusted

A2 Controller

Al7 CRT Driver

Related Performance Test

Sweep Time Accuracy (Sweep Times <30 ms)

Description

Coarse adjustment of the deflection amplifiers, Z-axis amplifiers, and line generators is done using the CRT adjust pattern. Fine adjustments use the graticule. The fast zero-span amplitude adjustments correct for differences between analog and digital display modes. The displayed sweep time accuracy is adjusted in the fast zero-span sweep adjustments.

SPECTRUM

ANALYZER

B N C C A B L E

SK12

Figure 2-2. Display Adjustment Setup

Equipment

10 dB VHF Step Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 355D Photometer/Radiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TEK JlG-TV

Adapters

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

Cables

BNC, 122 cm (2 required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 10503A

2-14 Adjustment Procedures