10 Mhz Out Frequency Reference Adjustment; Test Description; Required Test Equipment - Keysight NFA Series Performance Verification And Calibration Manual

Table 2-3
Equipment description
Universal Counter
Frequency Standard
BNC Lead (X 2)
Test Descriptions

10 MHz Out Frequency Reference Adjustment

10 MHz Out Frequency Reference Adjustment

Test Description

The adjustment applies to NFAs with both the standard 10 MHz
frequency reference and 10 MHz precision frequency reference (Option
1D5).
The adjustment is performed by calculating the actual frequency error in
Hertz from Counter Reading 1 given in the 10 MHz Reference Accuracy
Test (see page 12). The negative or positive error is used to define what
the new DAC setting should be. After the DAC settings are adjusted and
saved, the 10 MHz Reference Accuracy Test is re-run to verify the unit
meets it's published specification.

Required Test Equipment

10 MHz Out Frequency Reference Adjustment Test Equipment
Critical specification for equipment
substitution
Time Interval Range: 25ms to 100ms
Single Operation Range: +2.5 to -2.5Vdc
Frequency: 10 MHz Timebase Accuracy
(Aging): < 1 x 10
Length 122cm (48 in.), Frequency
10 MHz
The frequency standard provides the reference for the Universal
Counter. You can use a company-specific standard in place of the 5071A,
provided it meets the critical specifications listed in Table 2-3.
18
-10
/day
Recommended model
53132A
5071A
10503A
Chapter 2