User's Manual

MCC–DO Tests – continued
JUN 2004
A-7
1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU
DRAFT
Table A-3: Procedure to Test MCC–DO Pilot Time Offset
Step Action
9 When MMI> appears, type in the following command:
set_sc <modem number> <sector number> <channel> <PN offset>
where:
S <modem number> is the modem on MCC–DO card to be tested
S <sector number> is the sector number of the appropriate BBX (according to carrier selected in
LMF)
S <channel> is the appropriate channel (according to carrier selected in LMF) in the hexadecimal
format 0xHHHH or NNNN format (normal decimal).
S <PN offset> is set to 0 (zero)
10 Enable the modem on MCC–DO card by entering the following command:
enable <modem number>
where:
S <modem number> is the modem selected in step 10.
11 To generate a pattern, enter the following command:
fl_pattern 3
12 On the Agilent E4406, set the Mod Accuracy (composite Rho) measurement:
S Press Measure button
S Press More button until Mod Accuracy (composite Rho) option is displayed
S Select Mod Accuracy (composite Rho)
S Press Meas Setup button
S Press More button until Trig Source option is displayed
S Press Trig Source key and select Ext Rear option
S Press More button until Advanced option is displayed
S Select Advanced option
S If Chip Rate option is set to a value different than 1.228800, select Chip Rate and set it to
1.228800
S Select Active Set Th option to a value calculated using the following formula:
– xcvr_gain – cable_loss – 2dB
S To set appropriate frequency value, press Frequency and enter the value calculated according to the
following formula:
– <tx_base_band_value> + 0.05*<chan_no> [MHz]
13 Read the value of thePilot Offset. The Pilot Offset is less than 3 microseconds
A