Radio Systems CT-2002 Operations Instructions download pdf (Page 17)

Radio Systems, Inc. CT-2002 Manual

Page 16

Operation

1. After all connections are made, apply power. The unit will take from 1 to 15

minutes to acquire the satellite data. During this initial acquisition period,

and during any subsequent periods of satellite data loss, the GPS Master unit

will display one of 5 error codes. These codes and their meanings are listed

below.

2. After acquisition, the true time will display and will be serially relayed to any

digital display units “downstream”. If data is lost at any time in the future,

downstream display “data” lamps will extinguish, but these clocks will con-

tinue to run on their internal time base. On satellite reacquisition, the time

will be updated, and the “data” lamps re-illuminated.

3. Front panel master GPS controls cannot be used to set or change the digitally

displayed time-of-day, but the time mode may be used to adjust the time on

any analog clocks connected, and the START, STOP and RESET switches may

be used in the timer mode. See the “Analog Clock Connection and Use” sec-

tion for operating details.

GPS Error Codes

These two digit error codes will display in the GPS Master readout in the center

two digits on unit turn-on (pre-satellite acquisition) and during any data outage.

Error Code 1-Pulse Per Second Serial Data Data

01 (1 PPS line broken) not present present okay

02 (satellite acquisition lost) present present bad

03 (fire-up status - first 1 to 15 minutes) not present present bad

04 (corrupted serial data output) present not present bad

05 (no antenna connection) not present not present bad

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Radio Systems CT-2002 Operations Instructions Page 17