HP 3336A - Page 109

Performance Tests Model 3336A/B/C
**NOTE
Directional Bridges are also part of Transmission/Reflection Kits:
50 ohm Transmission/Reflection Kit -hp- Model 11652A
75 ohm Transmission/Reflection Kit -hp- Model 11652A
Option 008
a. Connect the equipment as shown in Figure 4-7. Use the appropriate impedance Direc-
tional Coupler and Termination for the output under test. For example, to test the 124 ohm
output, use the 124 ohm Directional Coupler and 124 ohm Termination Resistors. To test
the 75 ohm output, use the 75 ohm Direction Coupler and 75 ohm Feedthru Terminations.
NOTE
Make sure the frequency references of the synthesizer and the 3336
(DUT) are locked together.
b. Set the 3336 (DUT) output amplitude to maximum:
50 ohm — +8.76 dBm
75 ohm — +7.00 dBm
124 ohm — +1.76 dBm
150 ohm — +1.76 dBm
c. Set the 3336 (DUT) output frequency to one of the following test frequencies:
50 ohm — 100kHz, 1MHz, 10MHz, 20.9MHz
75 ohm — 100kHz, 1MHz, 10MHz, 20.9MHz
124 ohm — 100kHz, 1MHz, 10.9MHz
150 ohm — 100kHz, 1MHz, 2.09MHz
d.
Turn
Fast
Leveling
‘‘ON’’.
This
test
will
not
produce
valid
results
if
Fast
Leveling
is
“OFP’’.
e. Set the reference synthesizer’s output amplitude to — 10 dBm for all test setups except
when testing the 3336’s 75 ohm output. Set the reference synthesizer’s output amplitude to
—4 dBm when testing the 75 ohm outputs.
f. Set the reference synthesizer’s output frequency to the test frequency (selected in Step
c) plus 15 Hz.
g.
Tune
the
Wave
Analyzer
to
lock
to
and
measure
the
15
Hz
signal
from
the
High
Fre-
quency
Probe.
Use
a
3
Hz,
or
narrower,
resolution
bandwidth.
If
you
have
a
-hp-
Model
3581A/C
Wave
Analyzer,
set
the controls
as
follows:
SCALE fsck conces Ad ehnee is BAe oO ite EE SS tye 90 dB
RESOLUTION BANDWIDTH................ eee eeeee 3 Hz
SWEEP MODE............ 0. ce cece cece eee teen ences Manual
AMPLITUDE REFERENCE LEVEL................. Normal
INPUT (35810)... 56s ccc eee cat tbe eet eben Unbalanced
INPUT
SENSITIVITY...........
0.0.
c
cece
ee
eee
as
required
ARCS
ii
Senile
wt
ee
NEA
ae
eas
OUT:
Tune
to
15
Hz
APC.
eis
cagied
es
Hai
ans
eee
PUSHIN
after
tuning
to
15
Hz
4-24