Tektronix 2715 Intermodulation Products (IM)

Performance Verification
2715 Spectrum Analyzer Service Manual 4-17
3rd Order IM performance requirement is ≤70 dBc.
HTest equipmentrequired:
Signal Generators (2)
20 dB Pads (2)
BNC T Adapter
1. Recall default power up settings by pressing UTIL 1 1.
2. Connect the test equipment as shown in Figure 4--1.
RF Output
20dB Pads
BNCT Adapter
SignalG enerator SignalGenerator 2715 Spectrum Analyzer
*
*Usemin-loss pad for
75Ωinput
Figure 4- 1: 3rd Order IM TestSetup (25 MHz Separation)
3. Select the following settings on the SpectrumAnalyzer:
FREQUENCY 200 MHz
REFERENCE LEVEL --30 dB m
SPAN/DIV 10 MHz
RESOLUTION BW 30 kHz
VERTICAL SCALE 1 dB/
4. Set the VIDEO FILTERto 3 kHz by pressing UTIL251.
5. Set the first generator for a 200 MHz, full screen si gnal.
6. Set the second generatorfor a 225 MHz, full screen signal.
7. Reset the VERTICAL SCALE to 10 dB.
8. Check that the 3rd Order IMproduct is ≤--70 dBc.
9. Reset the VERTICAL SCALE to 1 dB and FREQ SPAN/DIVto 500 kHz.
10. Reset the second generatoroutput frequency for a 201 MHz, full screen
signal.
Intermodulation
Products (IM)