Directed Electronics 554A Instructions d'exploitation télécharger pdf (Page 28)

TM 11-6625-2611-12

Table 3-1. Operator’s Controls, Indicators, and Connectors (Continued)

Figure

3-1

index No.

Control, indicator,

connector

SUPPR switch

PRF SELECT switch

POWER DC FAULT indicator

POWER 1 AMP fuse holder

GND

TIMING MARKERS

Function

Toggle switch used to control suppression signal when in ON position, ap-

plies suppression signal to SUPPR OUT jack; when in OFF position, sup-

pression signal is not applied to jack.

Toggle switch in X 1/2 position divides PRF by 2.

Lights when test set power supply is malfunctioning or when lens cap is

activated for self-test.

Contains fuse that protects test set from primary power overload. Lights

when fuse is faulty.

Chasais ground

Crystal frequency markers for accurate pulse measurements provides 0.1,

1.0, and 10.0

sec markers.

3-8

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 58 59

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Directed Electronics 554A Instructions d'exploitation Page 28