HP 8904A - Page 234

Model 8904A Performance Tests
HP 8904fi
MULTIFUNCTION
SYNTHESIZER
000000000 -
OSCILLOSCOPE
AUDIO SOURCE
1 HIGH
OUTPUTS I
0 0 n n 0 0 0 0 0
000~00000
onno
00 yo00
oUTPUT I
X INPUT 1 1 Y INPUT
10 MHz
REF OUT
REF INPUT
I I I J
Figure 4-3. Phase Accuracy Performance Test Setup
Procedure
output 1
NOTE
If the instrument has an Option 002 and 006 combination, skip to step 6.
1. Set up the equipment as follows. Refer to Figure 4-3.
a. Connect the Multifunction Synthesizer’s rear-panel 10 MHz REF OUT to the reference
synthesizer’s
10 MHz reference input and set the reference synthesizer to accept an external
reference.
NOTE
Alternatiwly, the Multifunction Synthesizer my be connected to accept a 10
MHz reference from the reference synthesizer if needed.
b. Connect the Multifunction Synthesizer OUTPUTS 1 HIGH output to the oscilloscope’s dc
coupled,
X input. Switch the oscilloscope’s input impedance to 50R or terminate the input
in
500 using a tee.
c. Connect the reference synthesizer’s output to the oscilloscope’s dc coupled, Y input. Switch
the oscilloscope’s input impedance to
500 or terminate the input in 500 using a tee.
2. On the Multifunction Synthesizer, press SHIFT PRESET. After the instrument presets, key in
fl (Channel Conf ig. )
NEXT
SHIFT FLOAT 1 OFF
FREQ
100 kHz
AMPTD 1 V
PHASE INCR SET 18 deg
Performance Test 7 4-23
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