Frequency Control Input Test; (Model 608F Only) - HP 608E Operating And Service Manual

Model 608E/F
608 ElF
000
Section V
5-26. FREQUENCY CONTROL INPUT TESf
(MODEL 608F ONLY).
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a. Connect signal generator in test setup illus-
trated in Figure 5-11.
b. set FREQUENCY RANGE switch to range A.
c. Adjust frequency control for MEGACYCLES
dial reading of 10 MHz.
Figure 5-10. RF Leakage Test setup
d. Set MODULATION switch to CW position.
e. Adjust RF output control for ATTENUATOR
CALIBRATED condition.
f. Adjust Attenuator control for 1
/l
V output.
g. Adjust spectrum analyzer for ref ere n c e of
1
Jl
V.
h. Disconnect the cable from signal generator
RF OUTPUT connector. Set ATTEN to 0.1 p.V.
i. Connect loop antelUla (see Figure 5-1) to cable.
j.
Probe with loop antenna over entire signal
g e n e rat
0
r cabinet area. The spectrum analyzer
indication should not exceed 1
/l
V.
S08E1F
SIGNAL GENERATOR
o
0
d. COlUlect power supply and adjust for -2 Vdc at
FREQ CONTROL INPUT. NOTE frequency counter
reading.
e. Adjust power supply for -32 Vdc at FREQ
CONTROL INPUT. The frequency counter should
indicate a frequency change of more than 0.2%, or
20 kHz.
f.
Set frequency to high end of range A, 21 MHz.
g. Return power supply voltage to -2 Vdc at the
FREQ CONTROL INPUT. The frequency counter
should indicate a frequency change of more than 1%,
or 210 kHz.
h. Repeat this test on other bands of interest.
5246L/5242A
HARRISON FREQUENCY COUNTER
62048
POWER SUPPLY FR£O
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Figure 5-11. Frequency Control Input Test Setup
5-11