Model 8640B TM 9-4935-601-14-7&P
PERFORMANCE TESTS
4-16. FREQUENCY STABILITY VS LOAD, LEVEL, AND MODE TEST (Cont'd)
5. Repeat step 4 with PEAK DEVIATION set as shown below. The frequency change should be as specified.
Peak Deviation Frequency Change
20 kHz _________________________ <200 Hz
40 kHz _________________________ <400 Hz
80 kHz _________________________ <800 Hz
160 kHz _________________________ <1.6 kHz
320 kHz _________________________ <3.2 kHz
640 kHz _________________________ <6.4 kHz
1.28 MHz _________________________ <12.8 kHz
2.56 MHz _________________________ <25.6 kHz
4-17. HARMONICS TEST
SPECIFICATIONS:
Harmonics: (at 1 volt, +13 dBm output range and below)
>35 dB below fundamental of 0.5 to 128 MHz,
>30 dB below fundamental of 128 to 512 MHz.
DESCRIPTION:
A spectrum analyzer is used to measure harmonics as the Signal Generator is tuned from 0.5 to 512 MHz.
EQUIPMENT:
Spectrum Analyzer ...............................................................................HP 141T/8552B/8554B
PROCEDURE:
1. Connect generator's RF OUTPUT to analyzer's input after setting Signal Generator's controls as follows:
Meter Function .....................................................................................................................................LEVEL
COUNTER MODE: EXPAND...................................................................................Off
LOCK........................................................................................Off
Source ..................................................................................... INT
4-11
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