HP 2040D - Manual (Page 48)

Series 2040 Test System
Series 2040 Maintenance Manual V2.00 Certification
47
When this portion of the certification is complete, the TCXO frequency must
be checked. The procedure for the frequency certification is identical, except
for the final screen displaying the frequency counter. The user should wait
until the frequency is stable, and then click on certify to start the test. Again,
the results and a pass/fail condition are displayed.
For the portion dealing with the TDAC, the measured value must not vary
from the programmed value by more than the designated limits or a failure
will result. If this happens, a manual adjustment must be made. Contact
Digalog Systems should this occur.
screen shown below.