2201R Mobile Tester User Guide
Chapter 3 Performing manual tests and measurements in GSM mode
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TCH Type
This selection field allows you to select the type of voice channel for the test call to be set up. You can choose
between two full-rate speech types: Full rate speech and enhanced full speech.
RF Output Power
This is the radiated signal power of the 2201R Mobile Tester plus the currently selected coupling factor. In other
words, it is the input signal power of the mobile phone under test if the coupling loss is compensated correctly.
For the purpose of receiver tests, the power level is decreased until the call drops (below –100 dBm). In order to set
up a call, however, it may be necessary to turn up the output power to a sufficiently high level, for example –60 dBm).
Valid inputs are in the range from –120 to –20 dBm.
MS Power
While on a traffic channel, the base station typically commands the mobile phone to transmit at a dedicated power
level. For the purpose of transmitter and power tests, you can select the power level of the phone here. The allowable
values depend on the frequency band as shown in Table 8.
Note
The type of voice channel cannot be changed during a call.
Table 8 Nominal MS power levels by frequency band
Band Power control step MS power level
GSM 850 0 to 2
3 to 31
39 dBm
37 to 5 dBm in 2 dB steps
GSM 900 0 to 2
3 to 31
39 dBm
37 to 5 dBm in 2 dB steps
GSM 1800 0 to 15
29 to 31
30 to 0 dBm in 2 dB steps
36 to 32 dBm in 2 dB steps
GSM 1900 0 to 15
30
31
30 to 0 dBm in 2 dB steps
33 dBm
32 dBm
ER-GSM 900/R-GSM900 0 to 2
3 to 31
39 dBm
37 to 5 dBm in 2 dB steps