HP 8447D - Page 30

28 DRAFT
Operation and Service Manual
Performance Tests Procedures
Distortion and Reverse Isolation Test Procedure
Specifications:
Description:
A fixed, CW signal at 400 MHz is filtered and applied to the amplifier INPUT.
The amplifier OUTPUT is connected to a spectrum analyzer, and the analyzer is
used to check the second and third harmonic levels. Reverse isolation is checked
by applying a known signal level to the amplifier OUTPUT and measuring it at
the amplifier INPUT.
Equipment:
Spectrum analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HP 141T/8552A/8555A
Sweep oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8620A/8621A
400 MHz low pass filter . . . . . . . . . . . . . . . . . . . . . . . . . Cir-Q-Tel FLT/2 Series
Cable assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 10503A
Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UG-201A/U
10 dB attenuator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8491B-10
Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UG-349A/U
Cable assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 11500A
Specification
HP 8447D
Preamp
HP 8447E
Power Amp
HP 8447F
Preamp Power Amp
HP 8447F H64
Preamp Low Freq
Preamp
Harmonic
Distortion
−−
−30 dB for
+8 dBm out-
put
−−
−30 dB for
+8 dBm out-
put
−−
−35 dB for
+10 dBm out-
put
Reverse
Isolation
>40 dB >40 dB >40 dB >40 dB >40 dB −−