Technical data

3 Calibration
18 U2761A Service Guide
Performance Verification Procedures
It is recommended to carry out performance verification
tests when you first receive the U2761A. The performance
verification test results should be compared to the
specifications of the U2761A. You should repeat the
performance verification tests at every calibration interval.
If the U2761A fails the performance verification tests,
adjustment or repair is required. Some of the specifications
are adjustable, or otherwise replacement of parts may be
required.
Internal Timebase Verification
This test verifies the accuracy of the output frequency of the
U2761A. All output frequencies are derived from a single
generated frequency.
1 Connect the U2761A to a frequency counter as shown in
the following figure. The input termination of the
frequency counter must be 50
Ω.
Figure 3-1 U2761A to frequency counter connection