Figure 1-1. 600GR Converter Major Components (2 of 2)

TM 11-7010-207-23

Front Panel - Hinged translucent plastic panel which provides access to

converter boards and switches. When the panel is closed (normal) position,

indicator lamps are visible but switches are not accessible, preventing

accidental activation of switches.

Card Mounting Slots - Provisions for plugging in up to 12 converter boards.

Distance Short/Long Switch - Two position toggle switch. Short position used

for distances less than 2 km. LONG position for distances greater than 1.8

km. The distances which are common indicate an equal performance in either

position.

Front Panel Indicators - TD - Transmit data indicator is lit whenever a space

is transmitted. RD - When lit, indicates signal activity on the Receive Data

Line. Indicator is not lit when circuit is in continuous marking state.

Intensity of display varies with data transmission activity on the line. RLSD

- When lit, indicates a signal is being received. POWER - When lit, indicates

presence of power supply voltage when it is within acceptable operational

limits.

LpBK/NORM - TWO position toggle switch selects loopback feature which assists

in quick fault isolation during checkout and installation. In LBPK position,

the local unit is tested by internally connecting the transmitter to the

receiver. In this position, the transmit data (TD) will exercise the unit and

will be returned as receive data (RD) if the unit is operating correctly. If a

remote unit is connected to the system, the transmit data from the remote

terminal goes to the local modem's receive amplifier and is looped directly to

the modem's transmit amplifier and back to the remote terminal, testing both

converters and the transmission lines.

Channel Modems - Each 6006R converter printed wiring board is a plug-in module

with individual power supply. Each functions as a interface between your

system computer and signal lines to a remote terminal or computer.

S2 - Three-section DIP switch used in selecting straps in order to accommodate

various configurations.

Cabinet and Mother Board Connectors - 19-inch cabinet equipped with a

12-connector mother board and board mounting slots. The cabinet is designed

for mounting in a 19-inch equipment rack.

Ac Power Cord - Standard three-prong power cord which connects assembly to

power distribution unit of rack in which converter is mounted,

Ac Power Fuse - Removable ac power 3-amp, 250V cartridge fuse. Protects

converter power supplies.

TERMINAL Connectors - Data terminal equipment (DTE) connectors which mate

converter assembly to cables for data terminal equipment, one for each of 12

channels.

LINE Connectors - Nine pin connectors used for interconnection of converters

and transmission lines to remote terminals.

Figure 1-1.

600GR Converter Major Components (2 of 2)

1-5