HP 83206A User Manual page 259

Problems With or Without a PCS Interface Present
This section deals with Test Systems that do not include a PCS Interface.
Mobile will not
camp on a Control
Channel.
Message "DTC msg
(This assumes the mobile does register successfully.)
not acknowledged
by mobile" occurs
during attempt to
page mobile.
Mobile successfully
answers page but
immediately drops
the call.
The message
This message occurs because the Test Set's squelch threshold is continually being
"Squelch Interrupt
crossed by the digital signals from the mobile, overflowing an internal memory
Overfull. Press
buffer. This situation does not affect measurement ability or accuracy, and should
MEAS RESET" is
be ignored.
displayed.
Problems With or Without a PCS Interface Present
Verify that you have correctly connected the mobile to the Test System. See
"Connecting a Mobile" on page 38
Verify that you have set the System Type field (on the CALL CONTROL screen) to
DCCH.
Verify that you have set the Cntrl Chan settings to match the capabilities of your
mobile.
Verify that you have set the SID (System Identification number) to match the
programming of your mobile.
Verify that the Amplitude field is set to a level that provides a Control Channel with
great enough amplitude for the mobile to camp on. This level may have to be adjusted
higher than expected if another strong Control Channel signal is being generated at a
different frequency near the mobile under test.
Press the DUPLEX key to access the DUPLEX TEST screen. Verify that the
Input Port field is set to RF In, and that the Output Port field is set to RF OUT.
These settings assume you are connecting the mobile's antenna port directly to the RF
IN/OUT port of the mobile. If the mobile's receive and transmit connections have been
separated for testing, set these fields according to the configuration you are using.
Verify that you have selected the correct vocoder setting for your mobile in the Voc:
field (on the CALL CONTROL screen).
Verify that the MS ID field is set to Phone Num and that the correct phone number for
the mobile is entered.
The Traffic Chan Assignment settings are not compatible with your mobile. Be
sure to set the Type:, Band:, and Chan: fields for the traffic channel you want the
mobile to go to when paged.
Chapter 9, Troubleshooting
.
259