Specifications

Chapter 5 119
Test Specifications
13 — 16 TX ORFS Due to Ramping
13 — 16 TX ORFS Due to Ramping
NOTE These specifications are not used if you are running software on an
HP/Agilent 8922 without spectrum analyzer.
Description These specifications set the mobile station’s ORFS (Output RF
Spectrum) upper limits. They apply when testing the amount of
unwanted power transmitted by the mobile station as a result of the RF
power pulsing on and off (ramping). Testing can be done at frequency
offsets of 400 kHz, 600 kHz and 1200 kHz from the nominal center
frequency of the mobile station. If the upper limit is exceeded, an “F”
(for fail) is displayed next to the ORFS ramp pwr measurement result.
Note that ORFS test TEST_08 is executed using the power control level
set using parameter number 49 TX Power Control Level for
ORFS Tests. See page 162 for details.
NOTE Only GSM power classes 4 and 5, and DCS/PCS power class 1 are
supported. If parameter 49 is in the range of 0 to 4 for GSM, or 29 to 31
for DCS/PCS, then the test produces the following error message:
Power control level not supported by this test. Please
reconfigure parameter 31.
For greater accuracy of ORFS measurements, the peak comparison is
done in software. Values of two peak measurements at each offset are
compared by default. Higher numbers of comparisons can be chosen
using parameter 43 TX ORFS Ramping Meas. Comparisons [> 1].
See page 159 for more details.
Hardcoded
values
The following hardcoded values are used:
Offsets used The following offsets are used when calculating ORFS due to
modulation calculations:
Frequency offset
400 KHz 600 KHz 1200 KHz
GSM/DCS/PCS -17 dBm -22 dB -30 dBm
GSM 39 dBm -15 dBm -22 dB -30 dBm
400 KHz 600 KHz 1200 KHz
dBm 6 4 2