1-25. Configuration/Operating Routines - Continued.
1-26. Modes of Operation.
The operator can select and place the TD-1337(V)/G in one of five modes of operation as follows:
Inactive Mode. This is a powered-up idle mode. All output data and clock lines are inhibited. No
user traffic or orderwire data is processed.
TD-976 Mode. This mode is applicable only to a V1 model. In this mode, the TD-1337(V)/G serves
as an interface between a MD-1026( )(P)/G digital data modem and the terminal transmitting/receiving
equipment. A single 4915.2 kb/s data stream is processed. No multiplexing or demultiplexing operations
are performed and no orderwire options are available. Selecting the TD-976 mode completely con-
figures the TD-1337(V)/G to operate in this mode (no configuration data needed).
Preliminary Mode. This mode establishes
a communications link between terminals. Orderwire data
must have been previously entered for this mode to be selected. When this mode is selected,
the composite rate of your output SG and the composite rate of each incoming SG must be entered.
Overhead and orderwire data can now be exchanged between terminals (no user traffic is processed).
Since control telemetry is included as part of the overhead data, configuration data can be exchanged
Memory 1 Mode. In this mode, the TD-1337(V)/G operates in accordance with configuration data
stored in memory 1.
Memory 2 Mode. In this mode, the TD-1337(V)/G operates in accordance with configuration data
stored in memory 2.