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S:\Hp8960\E1960A GSM Mobile Test Application\A.04 Release\Reference_Manual\Chapters\prog_pvt_proc.fm
Programming a Power versus Time Measurement
Programming a Power versus Time Measurement
This section provides an example of how to make the power versus time (PvT) measurement via GPIB.
The following procedure assumes that an active link is established between the test set and the mobile station.
See
“Establishing an Active Link with the Mobile Station” on page 28
.
1. Configure PvT measurement parameters using the SETup subsystem.
2. Start the PvT measurement using the INITiate subsystem.
3. Use the INITiate:DONE? command to find out if the PvT measurement results are available.
4. Use the FETCh? command to obtain PvT measurement results.
Example Program
10 OUTPUT 714;”SETUP:PVTIME:CONTINUOUS OFF” !Configures a PvT measurement to
20 !single trigger mode.
30 OUTPUT 714;”SETUP:PVTIME:COUNT:NUMBER 100 !Configures a multi-measurment
40 !of 100.
50 OUTPUT 714;”SETUP:PVTIME:TRIGGER:SOURCE AUTO” !Configure trigger source
60 !to auto.
70 OUTPUT 714;”SETUP:PVTIME:BSYNC MIDAMBLE” !Configures a PvT measurement so
80 !that burst synchronization, which
90 !will synchronize the time of the
100 !measurement algorithm relative to
110 !the data sample, will be set
120 !to midamble.
130 OUTPUT 714;”SETUP:PVTIME:TIME:OFFSET -28US,-18US !Turns on time markers
140 !-28 and -18 microseconds.
150 OUTPUT 714;”INITIATE:PVTIME” !Start PvT measurement.
160 REPEAT
170 OUTPUT 714;”INITIATE:DONE?” !Check to see if PvT measurement is done.
180 ENTER 714;Meas_complete$
190 UNTIL Meas_complete$=”PVT”
200 OUTPUT 714;”FETCH:PVTIME:ALL?” !PvT results for time measurements.
210 ENTER 714;Integrity,Pvt_mask, Pvt_power, Max_offset
220 END
Returned values
The measurements returned by this program are:
•
Integrity
returns the measurement
“Integrity Indicator” on page 125
(0 means a successful
measurement with no errors).
•
Pvt_mask
returns the mask pass/fail indicator. When the multi-measurement count is greater than 1, the
PvT mask pass/fail result will return Fail (1) if any single measurement fails.
•
Pvt_power
returns the PvT carrier power in dBm.
•
Max_offset
returns the maximum offset level in dB, relative to the PvT carrier power.
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