Specifications

Chapter 4 86
Tests
TEST_07 TX ORFS Due to Modulation
TEST_07 TX ORFS Due to Modulation
NOTE This test does not run on an HP/Agilent 8922 without a Spectrum
Analyzer Option 006.
Description This test measures the mobile station’s out-of-channel power due to
modulation. The “TX ORFS modulation” parameters select which
frequency offsets are measured.
The test is performed using the default power control level as specified
by parameter number 31 TX Default Power Control Level (see page
153 for details).
The HP/Agilent 8922 makes Output RF Spectrum (ORFS)
measurements using a 3-pole synchronously tuned measurement filter.
Refer to the technical reference sheet Output RF Spectrum
Measurements Using a 3-Pole Synchronously Tuned Measurement Filter
(Agilent part number 1000-1223) available from the nearest Regional
Sales and Service Office.
The GSM 11.10, GSM 11.10 DCS, and PN 3389 recommendations
specify power levels relative to average TX power at the following
frequency offsets:
• Spec 8 (
± 100 kHz)
• Spec 9 (
± 200 kHz)
• Spec 10 (
± 250 kHz)
• Spec 11 (
± 200 kHz × N for N = 2 through 8)
References: GSM 11.10 II.3.4.2.2 Ver 3.13 June 1993 and HP Technical
Reference Sheet Output RF Spectrum Measurements Using a 3-Pole
Synchronously Tuned Measurement Filter (Agilent part number
1000-1223) available from the nearest Regional Sales and Service
Office.
NOTE The specifications for ORFS due to Modulation do not allow for the
exceptions in GSM 11.10 DCS II.3.4.2.2 for several discrete failures of
up to −36dBm at various points in the band.
Specifications The following values are used for specifications 8 to 12. Either the
relative limit in dBc or the absolute limit in dBM is taken, whichever is