User`s guide

Chapter 2 93

Test Descriptions

TEST_43 - TXD Spectrum Emissions

NOTE

To run this test on an Agilent 8924E, Option 012 must be installed.

Description

This test measures the level of emissions at 900 kHz and 1.98 MHz

offset from the mobile station’s carrier frequency.

1. A Service Option 2 (or 9 if parameter 19. RT Rate Set Selection

[0=9600 1=14400] is set to 1) call is attempted, unless a Service

Option 2 or 9 call is already connected. If the MSUT has not

registered, the call attempt may be unsuccessful and the error

message “Failed to establish a call in test <>” will be displayed. To

correct this problem, perform the CPD Registration test.

2. Sector A power is set up so that the MSUT will provide -13 dBm to

the Test Set’s spectrum analyzer (including path loss).

3. The trigger mode is set to repetitive and video averaging turned on.

4. The spectrum analyzer level measurement at the center frequency

marker is retrieved.

5. The frequency marker is moved 900 kHz from the center frequency

and a level measurement is retrieved.

6. The frequency marker is moved 1.98 MHz from the center frequency

and another level measurement is retrieved.

7. A dBc value for the 900 kHz and 1.98 MHz marker levels is

calculated by taking the difference between the marker levels

measured in steps 5 and 6 and the reference level measured in step

8. The following measurement results are printed to the TESTS

(IBASIC Controller) screen:

• TXD Spectrum Lvl @ 900 kHz <dBc/30 kHz>

• TXD Spectrum Lvl @ 1.98 MHz <dBc/30 kHz>

Refer to the Agilent 8924C Reference Guide for information about the

Marker fields and the No Pk/Avg field, (used for video averaging).

Pass/Fail Limits Used

The Pass/Fail limits for this test are hard-coded into the software. The

values used were obtained from TIA/EIA IS-98 minimum standard for

the Conducted Spurious Emissions test.