Tektronix 2715 Short TermD rift, Noise Sidebands

Performance Verification
4-6 2715 Spectrum Analyzer Service Manual
Performance requirement is ≤400 Hz between frequency corrections.
1. Recall default power up settings by pressing UTIL 1 1.
2. Select the following settings on the Spectrum Analyzer:
FREQUENCY 100 MHz
REFERENCE LEVEL --30 dB m
SPAN/DIV 1 kHz
RESOLUTION BW 300 Hz
VID FLTR Off
VERTICAL SCALE 10 dB/DIV
SWEEP AUTO
3. Enable the calibrator by pressing INPUT 9.
4. Press CTR-MEAS/TRKG to center the signal.
5. Check that the signal does not move more than ±2 minor divisions from
center screen.
Performance requirement is ≥70 dBc at 30 X Resolution Bandwidth for
Bandwidths ≤100 kHz.
1. Recall default power up settings by pressing UTIL 1 1.
2. Enable the calibrator by pressing INPUT 9.
3. Select the following settings on the Spectrum Analyzer:
FREQUENCY 100 MHz
REFERENCE LEVEL --30 dB m
SPAN/DIV 1 MHz
RESOLUTION BW 100 kHz
VID FLTR On
VERTICAL SCALE 10 dB/
SWEEP AUTO
4. Enable peak detection modeby pressing DSPL 4.
5. Check that the noise sidebands areat least 70 dB down from peak amplitude
at ≥9 MHz away from centerfrequency (30 times the selected bandwidth).
6. Reset RESOLUTION BW and S PAN/DIVset tings according to Table 4-- 3 to
check the remaining filters.
Short TermD rift
Noise Sidebands