Demodulation Trigger Delay
Last updated: December 3, 2008
You can specify a delay of up to 200 symbols for uplink channel demodulation to compensate for any delay introduced on the test set's downlink channel by an external source. A time delay might be introduced to simulate a physical distance between the MS and the test set while performing E-OTD tests (see
E-OTD (Enhanced Observed Time Difference)
for more information). If the downlink delay were too great, the connection between the MS and the test set might be lost.
Operating Considerations
Configuring the Demodulation Trigger Delay
The demodulation trigger delay is configured via GPIB only. See
CALL:DEModulation
for more information.
Operating Mode
You can set the value of the trigger delay in any operating mode.
The demodulation trigger delay is only usable in the following operating modes:
-
Active Cell
-
GSM BCH
-
GPRS BCH
-
GSM BCH + TCH
-
GPRS BCH + PDTCH
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