Pulse On/Off Ratio Test - HP 8642A Operating Manual

Performance Tests
Model 8642A/B
PERFORMANCE TESTS
4-7. PULSE ON/OFF RATIO TEST
SPECIFICATION:
Electrical Characteristics
On/Off Ratio
Performance Limits
>30 dB
>45 dB
Conditions
band HET-9
band 10
DESCRIPTION:
Pulse On/Off Ratio is measured by using the measuring receiver to measure
the power output of the HP 8642 without modulation and in Pulse mode
with no modulating signal. The ratio is measured at worst case frequencies
for the HP 8642.
O D L
] D D D O D D
§§g§ O i t
HP 8642A/B
SYNTHESIZED
SIGNAL GENERATOR
10 UHz
OUTPUT
RF
OUTPUT
REF EXT
INPUT
MEASURING
RECEIVER
SENSOR
MODULE
RF
INPUT
Figure 4-3. Pulse Test Setup
EQUIPMENT: Measuring Receiver HP 8902A
Sensor Module HP 11722A
PROCEDURE: la. Setup
Connect the instruments as shown in Figure 4 - 3 . Preset the
instruments. Set the measuring receiver to tuned RF Level mode. If
the Level Accuracy Performance Test has just been done with the
same measuring receiver then continue with step 2. If Level
Accuracy has not yet been done or you have changed measuring
receivers then calibration is required. In this case, complete step lb
before continuing with step 2.
4 - 1 4