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NOTE
NOTE
Step 1. Check that the NFA is not in the external reference mode. If the external reference is
Step 2. Ensure that the NFA's preset condition is set to its factory settings.
Step 3. Preset the NFA by pressing the
Step 4. Set the Universal Counter controls as follows:
Test Descriptions
10 MHz Out Frequency Reference Accuracy
Test Procedure
The NFA must be on and in internal frequency mode for at least 1 hour before you
start the test.
Throughout the 10 MHz Out Frequency Reference Accuracy Test Procedure the
term 'the Worksheet' refers to the 10 MHz Out Frequency Reference Accuracy Test
Worksheet on page 19 and the term 'the Test Record' refers to the 10 MHz Out
Frequency Reference Accuracy Test Record detailed in the relevant Appendix for
the model number being tested.
connected, remove it from the 10 MHz Ref Input.
Press the
System
key, the
item to Power On(Preset) and
1. Press
and
Gate
ExtArm
2. Press any one of the arrow keys until Time is displayed.
3. Press
Gate
and
ExtArm
press
to set the value.
Enter
4. On Channel 1, press
5. On Channel 1, press
6. On Channel 1, press
7. On Channel 1, press
16
More
menu item, then set the
to Preset (Factory).
Preset
key. Wait for the routine to finish.
Preset
again and using the arrow keys, set the Time to 10s and
Ω
Ω until the LED is lit.
50
/ 1M
until the LED is extinguished.
x10 Attenuator
until LED next to DC extinguished.
AC/DC
until the LED is extinguished.
100 Hz Filter
Power On/Preset
menu
Chapter 2
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