2201R Mobile Tester User Guide
Chapter 3 Performing manual tests and measurements in GSM mode
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8. If the mobile phone does not perform a GPRS Attach automatically, enable the GPRS mode in the phone so that
it registers with the GPRS routing area.
The status field displays GPRS Attached, and the GPRS Start Test and Tx Test soft keys are accessible.
9. In the Mode selection field, select BLER USF.
10. You may want to select a different number of samples in the range from 1 to 10,000 blocks; the default is 100.
11. From the Slots selection field, select the number of time slots per frame that you want to test. The 2201R allows
you to select only as many time slots per frame as the mobile phone is capable of transmitting.
12. In the RF Output Power entry field, select the power level at which you want to perform the receiver
measurement.
13. Push the Start Test soft key.
The measurements are started, and the menu is frequently updated with results.
’Interpreting the results’ on page75 explains how the results should be read.
Note
Ensure that you keep this sequence of steps, there may be restrictions in the test capabilities
otherwise.
Note
A sample in case of the BLER-USF measurement is a data block, which in the worst case of one time
slot assigned in the uplink, takes 20 ms to transmit. So if you select 200 samples and one uplink time
slot, a measurement result is returned every four seconds.
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