VXI 3002 manual Carrier frequency accuracy, Counter

Carrier frequency accuracy

This check provides a conventional method of checking the signal generator frequency locking circuitry. It will confirm correct operation of phase locked loops and dividers. Overall accuracy is determined by the instrument’s internal reference standard.

Specification

Range	9 kHz to 2.4 GHz.
Resolution	1 Hz.
Accuracy	Equal to the frequency standard accuracy.
Test equipment

Description

Minimum specification

Example

Frequency counter

9 kHz to 2.4 GHz

Agilent 53181A with option 030

Test procedure

Counter

UUT

INPUT

RF

OUT

C5356

Fig. 5-3 Carrier frequency accuracy test set-up

(1)Connect the test equipment as shown in Fig. 5-3.

(2)Connect the internal frequency standard from the UUT to the external standard input on the counter.

(3)On the UUT set:

Carr Freq	9 kHz
RF Level	0 dBm

(4)Record the frequency measured by the counter against each of the carrier frequencies shown in Table 5-14. (Since the two instruments’ frequencies are locked together, the limit is

±1 digit on the counter display.)

(5)At 1200 MHz disconnect the UUT internal frequency standard from the counter and instead apply the external reference. Check the result against the limits.

The test limits quoted are for guidance and assume that the internal frequency standard has recently been adjusted. Aging and stability have to be considered when establishing the real test limits (see 'Performance data' in Chapter 1).

5-6