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Performance Verification
2715 Spectrum Analyzer Service Manual
4-27
2. Select the following settings on the Spectrum Analyzer:
FREQUENCY 100 MHz
REFERENCE LEVEL --30 dBm
SPAN/DIV 10 kHz
RESOLUTION B 3 kHz
VID FILTR Off
VERTICAL SCALE 10 dB/div
SWEEP AUTO
3. Enable the calibrator by pressing INPUT 9.
4. Disable phase lock by pressing UTIL434.
5. Enable SINGLE SWEEP.
6. Enable a marker by pressing MKR/∆/OFF, and tune the marker one division
down from the top of the screen on the falling slope of the calibrator signal.
7. Enable a second marker (Delta Marker) by pressing MKR/∆/OFF, and tune
the marker three divisions down from the top of the screen on the falling
slope of the calibrator signal.
8. Divide the Delta Frequency readout (upper right readout) by 2. The ratio of
the frequency delta to 2 divisions then is the vertical scale factor for this
measurement in ZERO SPAN.
9. Disable the markers by pressing MKR/∆/OFF,thenpressAUTO SWEEP.
10. Tune the center frequency control to position the trace 2 divisions down from
the top of the screen.
11. Activate ZERO SPAN, and reset Time/div to 2 ms by pressing SWEEP ↓
until the readout indicates 2MS/.
12. Check that the signal does not move more than ±2 kHz according to the
vertical scale factor established in step 8.
13. Enable phase lock by pressing UTIL434.
14. Reset the following parameters:
SPAN/DIV 1 kHz
RESOLUTION BW 300 Hz
15. Repeat steps 6 through 12.
16. Check that the signal does not move more than ±100 Hz according to the
vertical scale factor established in step 8.