Rohde & Schwarz SMU200A - Test Procedures; Reference Frequency

R&S SMU200A Test Procedures
1007.9845.82 1.9
E-12
Test Procedures
Reference Frequency
Output of Internal Reference
Important: Allow the DUT to warm up for at least 2 hours before the measurement.
Test equipment
- RF power meter (Table 1-2, item 8)
- Frequency counter (Table 1-1, item 1)
Test setup Connect an RF power meter to the REF OUT output (on rear panel).
Measurement
 Measure the output level. It should be within ±3 dB of the dat
a
s
heet specifications
.
Test setup  Connect a calibrated frequency counter to the REF OUT output (on
r
ear panel)
.
Measurement  Measure the frequency.
 The frequency deviation must not exceed the sum of deviations
resulting from the frequency error in the rated temperature range
and from aging.
Input for External Reference
Test equipment - Frequency counter (Table 1-2, item 1)
- Signal generator (Table 1-1, item 5)
Test setup  Connect the signal generator to the REF IN input for the external
reference (on rear panel) and connect a calibrated frequency counter
to the RF output
.
Measurement
 Measure the frequency with the setting
Reference Oscillator Settings/Source External.
 The pull-in range has to be tested only at 10 MHz input
frequency by measuring the output frequency (e.g. at 1 GHz).
There must be no relative frequency error and no error message.
At the other input frequencies, a function test at nominal
frequency is sufficient. The level of the signal generator has to be
varied over the specified range.