GSM/EDGE Measurement Application
Measurements
Description | Specifications | Supplemental Information |
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Phase and Frequency Error |
| GMSK modulation (GSM) |
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| Specifications based on 3GPP essential |
|
| conformance requirements, and 200 |
|
| bursts |
Carrier power range at RF Input |
| +27 to −45 dBm (nominal) |
Phase errora, rms |
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Floor | 0.6° |
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Accuracy | ±0.3° |
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Phase error range 1 ° to 6 ° |
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Frequency errora |
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Initial frequency error range |
| ±80 kHz (nominal) |
Accuracy | ±5 Hzb + tfa c |
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I/Q Origin Offset |
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DUT Maximum Offset |
| −15 dBc (nominal) |
Analyzer Noise Floor |
| −50 dBc (nominal) |
Trigger to T0 time offset |
| ±5.0 ns (nominal) |
Relative accuracyd |
|
a.Phase error and frequency error specifications apply when the Burst Sync is set to Training Sequence.
b.This term includes an error due to the software algorithm. The accuracy specification applies when RMS phase error is less than 1 °.
c.tfa = transmitter frequency × frequency reference accuracy
d.The accuracy specification applies when the Burst Sync is set to Training Sequence, and Trigger is set to External Trigger.
138 | Chapter 10 |
