Performance Verification
4-10 2715 Spectrum Analyzer Service Manual
9. Use the following procedureto check Center Measure/Counter Resolution
Counter Resolution selectable. Performancerequirement is 1 Hz or 1 kHz
a. Recall default power up settings by pressing UTIL 1 1. Select the
following settings on the Spectrum Analyzer:
FREQUENCY 100 MHz
REFERENCE LEVEL --20 dB m
SPAN/DIV 100 kHz
RESOLUTION BW AUTO
VID FLTR Off
VERTICAL SCALE 5 dB/
b. Enable the calibrator by pressing INPUT 9.
c. Tune the signal approximatelythree divisions to one side of the center of
the screen.
d. Select a counter resolutionof 1 Hz by pressing MKR/FREQ911.
Press CTR-MEAS/TRKG.
e. Check that the signal is moved to centerscreen, frequency and amplitude
readouts are preceded by the letter C, and the frequency readout is
displayed to six decimal places.
f. Select a readout resolutionof 1 kHz, and press CTR-MEAS/TRKG.
g. Check that the signal frequencyreadout is displayed to three decimal
places.
Performance requirements are:
10 dB/: ±1.0 dB/10 dB to a maximum cumulative error of ±2.0 dB over the
70 dB range and a maximum cumulative error of ±4.0 dB over the 80 dB range
5dB/:±1.0 dB/10 dB to a maximum cumulative error of ±2.0 dB over the40 dB
range
1 dB/: +1 dB maximum error over the 8 dB range
Linear: ±5% of full scale
HTest equipmentrequired:
Signal Generator
10 dB and 1 dB Step Attenuators
Display DynamicRange Accuracy