HP 81536A - Accuracy Test Procedure; Linearity Test Procedure

D
I. Accuracy Test
1. On both power meters:
a. Set the calibration factor to zero.
b. Set the wavelength to the wavelength of the laser source.
c. Set the instruments into MEAS mode. Make sure AUTOranging is o and
select the -20dBm range.
d. Set the averaging time to 500ms.
2. Make sure that the HP 8156A output is disabled. ZERO the DUT.
3. Connect the HP 8156A output cable to the standard head and ZERO the
standard meter.
4. Enable the HP 8156A output. Change the HP 8156A attenuation until the
power meter standard displays 10.00  W.
5. Connect the attenuator output cable to the DUT. Check the DUT display and
note the result in the test record.
6. Repeat steps 1 to 5 at the second wavelength with the corresponding source.
II. Linearity Test
1. Make sure that the HP 8156A output is disabled. ZERO the DUT
.
2. Enable the HP 8156A output.
3. On the DUT, switch o autoranging and select the -20dBm range. Set the
display to show results in dBm.
4. Alter the attenuation until the DUT displays -17.4dBm.
5. Press 4
Disp ! Ref
5 , then 4
dB
5 .
6. Press 4
Up
5 to select the -10dBm range.
7. Note the deviation, displayed in dB, as R1 on the test record.
a. In the -10dBm range. Set the display to show results in dBm.
b. Alter the attenuation until the DUT displays -7.4dBm.
c. Press 4
Disp ! Ref
5 , then 4
dB
5 .
d. Select the 0dBm range.
e. Note the deviation, displayed in dB, as R2 on the test record.
HP 81536A Performance Tests D-5