HP 181A User Manual download pdf (Page 47)

Chapter 1 Performance Tests

Test 3: Channels 1 and 2 Frequency Sensitivity (HP 53131A/132A Only)

Assembly-Level Service Guide 1-25

10 Record the actual reading in the appropriate place in the

Performance Test Record (Test 3, Line 2).

If you are testing a Counter with front-panel terminals (Standard),

record the reading on Line 2 of the Standard portion of the test record.

If you are testing a Counter with rear terminals (Option 060),

record the reading on Line 2 of the Option 060 portion of the test record.

NOTE

The remaining sensitivity procedures are NOT required for Counters that

contain Option 060 Rear Terminals; thus, this completes the sensitivity

portion of the Frequency Performance Test. Go to the Frequency Accuracy

Test on page 1-27.

100 MHz to 200 MHz Sensitivity for HP 53131A/132A

1 Leave the signal generator connected to Channel 2. Change the

signal generator settings to 200 MHz at

−

30 dBm.

2 On the Counter, press Run key.

3 Increase the power level by 0.1 dB steps until the Counter

displays a stable 200 MHz reading.

The Counter should display 200 MHz when the input signal level is

≤−

17.5 dBm (30 mVrms).

4 Sweep the signal generator frequency from 200 MHz to 100 MHz.

The Counter should read frequencies from 200 MHz to 100 MHz when the

input signal level is

≤ −

17.5 dBm (30 mVrms).

5 Record the actual reading in the Performance Test Record

(Test 3, Line 3).

6 Connect the signal generator to Channel 1.

7 On the Counter, press Freq & Ratio key until

Frequency 1

displayed.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 253 254

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HP 181A User Manual Page 47