Tektronix RSA3300A, Service Manual

Page: 79 / 284

Performance Tests
RSA3303A & RSA3308A Service Manual
4- 23
Check that the absolute amplitude error is within the specified range for the
analyzer. It uses a power meter and a power sensor to set the signal generator
output accurately.
Equipment
Required
One signal generator (Item 1)
One power meter (Item 6)
One power sensor (Item 7)
One 50
Ω
N-N coaxial cables (Item 10)
Prerequisites
Refer to page 4--10.
1. Set up the power meter and sensor:
NOTE
. Store the power sensor correction factors in the power meter, if you have
not yet done so. When you use the Agilent 437B power meter, refer to Storing Cal
Factors in the Power Meter on page 5--4.
a. Connect the power meter and the power sensor. See Figure 4--9 below.
Sensor input
Power meter
Power sensor
Figure 4- 9: Initial hookup for setting up the power meter and sensor
b. Warm up the power meter and sensor for more than 20 minutes.
c. Press ZERO on the power meter.
d. Connect the RF input of the power sensor to the power reference output
of the power meter. See Figure 4--10 on page 4--24.
e. Turn on POWER REF and execute the calibration.
f. Disconnect the RF input of the power sensor from the reference output
of the power meter.
Absolute Amplitude
Accuracy Test