27
Operating the CMGPS
2. The synchronization pulse of 200 ms is sent in regular intervals of 1 minute
(synchronization on falling edge). Every synchronization pulse sent is
indicated by the "Pulse" LED that lights up for 500 ms.
3. This synchronization pulse can now be used as trigger pulse for starting one
or several test processes. The required settings are determined by software
parameters (see respective software documentation and/or on-line help).
Typically, the CMGPS is ready for operation max. 10 minutes after the power
supply has been applied to it. If this should not be the case, refer to
section 7 ”Faults, Possible Causes, Remedies” on page 41.
4.2 Connecting the CMGPS to a CMC 56
Earlier versions of the CMC 56 test set do not have an ext. Interf. connector at
their rear side. If you have such a test set, connect the CMGPS to a binary input
instead.
Figure 4-3:
The Pulse out 2
interface
Use two suitable cables with banana plugs and
connect the Pulse out 2 interface ("+" and "-")
to a binary input of the CMC 56.
Make sure the polarity of the connection
cables is correct.
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General