180 
Performance Tests
Performance Test
Figure D-2 Total Insertion Loss Test Setup 1, Options 201, 221 
Figure D-3 Total Insertion Loss Test Setup 1, Option 350 
3. On the DUT, press and hold A
TT to reset the attenuation to 
minimum (any attenuation shown on the display is due to the 
calibration factor).
4. Zero the Power-meter and select Autorange. Display [dB]
5. Enable the laser source and set Display to Reference on the 
power meter.
6. Connect the equipment as shown in the appropriate Total 
Insertion Loss Test Setup 2. 
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