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Opening a Relay
In Case of
Trouble
Getting Started 2-6
3.
Rotate the knob until line 3 shows the desired channel
number, which is 104 in this example:
----OPERATIONS----
Drawer: 1260-CDS
>Channel: 104
Status: Open
4.
Press the fourth key to select line 4 (bottom line). Rotate the
knob until the display reads:
----OPERATIONS----
Drawer: 1260-CDS
Channel: 104
<Set to?: Closed
5.
Press the fourth key to confirm the closure of the channel.
The relay then closes, and the display shows:
----OPERATIONS----
Drawer: 1260-CDS
Channel: 104
> Status: Closed
Pressing any other key cancels the change.
To open a relay, follow the steps given in the above section,
Closing a Relay, except in step 4 rotate the knob until the display
reads:
----OPERATIONS----
Drawer: 1260-CDS
Channel: 104
<Set to?: Open
Then press the fourth key to confirm the opening of the relay.
Pressing any other key cancels the change.
If you have difficulties using the 1257 Switching System, refer to
Appendix C, TROUBLESHOOTING to resolve the problem. If the
problem persists, refer to Chapter 9, PRODUCT SUPPORT for
instructions on contacting EADS North America Defense Test and
Services for assistance.
1257 User Manual
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EADS North America Defense
Test and Services, Inc. © 2001
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