Technical data

8510C Service Quick Reference Guide 4-5
Performance Verification
CW Frequency Accuracy Test
CW Frequency Accuracy Test
Source frequency accuracy is tested across the entire sweep range for 8340/8360 sources
only. Measure CW frequency accuracy with a frequency counter. The 8350 source frequency
accuracy is tested during the total system uncertainty test.
Front panel emulation software (included in the 8510 operating system disk) is required to
test an 83621/31/51. The emulator kit (part number 08510-60022) contains an analyzer
keypad overlay and instructions.
NOTE If the source and test set operate below 500 MHz, connect the test set output
to the 10 Hz 500 MHz BNC connector on the frequency counter. The input
switch on the frequency counter must also be in the 10 Hz 500 MHZ
position.
1. Connect the equipment as shown in Figure 4-1.
Figure 4-1 CW Frequency Accuracy Equipment Setup
2. To preset the instruments, press
INSTRUMENT STATE RECALL, [MORE], [FACTORY
PRESET].
3. To set the frequency using the analyzer front panel, press STIMULUS CENTER, MENU,
[SINGLE POINT]. Enter
the start frequency of the source or test set, whichever is higher.
4. Measure the frequency with the counter, and record this value on the test record as in
Table 4-2.
5. From the analyzer front panel, enter the stop frequency of the source or test set,
whichever is lower. (For an 83640 or 83651, refer to the 8510C On-Site Service Manual,
Chapter 8, “Performance Verification and Specifications”, in the frequency test
procedure section for specific instruction about disabling the source doubler.)