Table 3-1. Front Panel Controls and Indicators-continued

TM 11-6625-3024-14/EE641-AC-MMA-010/E154 SYSEX/TO 33AA50-5-1-1

Table 3-1. Front Panel Controls and Indicators (Continued)

Function

Control/Indicator

TRANSPORT

Provides +28 Vdc power to the transport. The

ECR-10

Exerciser SYSTEM ON/OFF power switch must be

460-9101

ON before transport power can be enabled.

Note

A current sense loop or a 5 amp rated

ammeter must be inserted in the

TRANSPORT CURRENT jacks before

transport power can be enabled.

WRITE DATA

Note

The Write Data controls are push-ON

and push-CHANGE, three-position

pushbutton switches. The lighted portion

of the switch indicator indicates the

enabled function.

Selects the write data to be written on tape. When

PAT. (Pattern) is lighted a data pattern will be

written on tape. When "0" is lighted a logic 0 will be

written on tape. When "1" is lighted a logic 1 will be

written on tape. The nine indicator switches

(Indicator Switches)

provide write data selection for tracks 0 through 7

and Parity. A test jack under each indicator is

provided to monitor each write data track, parity

track, and the write data clock.

A test jack is provided under each PAT./ 0 / 1

Grid, 0 through 7, P and CLK

indicator to monitor each write data track, parity

Test Jacks

track and the write data clock. The GND test jack is

used as return for all write data test jacks.

Selects all tracks at once (except parity track) to

ALL O

logic O write data. The white portion (0) of the

Switch (white)

WRITE DATA indicators for all tracks (except parity

track) will light.

3-7