
Chapter  1  25
 Calibrating
Before You Start
Periodic verification of operation
The analyzer requires periodic verification of operation. Under most 
conditions of use, you should test the analyzer at least once a year with 
the complete set of performance verification tests.
Test equipment you will need
The following tables list the recommended test equipment for the 
performance tests. The tables also list recommended equipment for the 
analyzer adjustment procedures which are located in the Agilent ESA 
Spectrum Analyzers Service Guide. Any equipment that meets the 
critical specifications given in the table can be substituted for the 
recommended model.
Table 1-9  Recommended Test Equipment 
Equipment Critical Specifications for Equipment 
Substitution 
Recommended 
HP/Agilent Model Use a 
Digital Multimeter Input Resistance ≥10 megohms 
Accuracy: ±10 mV on 100 V range
 3458A P,A,T
DVM Test Leads For use with HP/Agilent 3458A Digital 
Multimeter
 34118B T
Universal Counter Frequency Range: 10 MHz ±100 Hz 
Time Interval Range: 25 ms to 100 ms 
Single Trigger Operation
Range: 2.5 Vdc to –2.5 Vdc
External Reference Input
Gate Time: ≥10 seconds
Frequency Resolution: 0.01 Hz
 53132A P,A,T
Frequency Standard Frequency: 10 MHz 
Timebase Accuracy 
(Aging): <1×10−9/day
 5071A P,A