HP 181A manual Performance Tests

1

Chapter 1 Performance Tests

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

2Set the HP 8663A Signal Generator to output a 100 MHz,

−35.0 dBm sine wave signal (−20.0 dBm for Option 060 Rear

Terminals) to the Counter’s Channel 1 input.

3On the Counter, press Run key.

4In 0.1 dB steps, increase the power level until the Counter displays a stable reading of 100 MHz.

The Counter should display 100 MHz when the signal generator level is

≤ −21.0 dBm (20 mVrms). Counters with Option 060 should display 100 MHz when the signal generator level is ≤ −9.5 dBm (75 mVrms).

5Sweep the frequency from 100 MHz to 100 kHz. For Option 060, sweep frequencies from 225 MHz to 100 kHz.

The Counter should read frequencies from 100 MHz to 100 kHz at an input power level of ≤ −21.0 dBm (20 mVrms). Counters with

Option 060 should read frequencies from 225 MHz to 100 kHz at ≤ −

9.5 dBm (75 mVrms).

6Record the actual reading in the appropriate place in the Performance Test Record (Test 3, Line 1).

If you are testing a Counter with front-panel terminals (Standard), record the reading on Line 1 of the Standard portion of the test record.

If you are testing a Counter with rear terminals (Option 060), record the reading on Line 1 of the Option 060 portion of the test record.

NOTE	DO NOT test the front terminals if rear terminals are installed. The front
	terminal performance is not specified when the rear terminals are installed.

7Connect the HP 8663A to Channel 2 of the Counter.

8On the Counter, press Freq & Ratio key until FREQUENCY 2 is displayed.

9Repeat steps 2 through 5 for Channel 2.

1-24 Assembly-Level Service Guide