35
Introducing the HP E5574A Optical Loss Analyzer
Getting Started
How to Measure the Reference Power
1
Connect the optical output to the optical head you wish to use.
Include all connectors and connector adaptors you are going to
use for connection of your device under test.
2
Activate the optical output.
If you decide to use the internal light source, press S
OURCE
O
N
/
O
FF
to turn the source on. Watch the source indicator lamp.
If you have connected an external light source to the optical
input, press S
OURCE
O
N
/O
FF
to turn the internal source off.
WA R N I N G
After connecting an external source to the optical input, light
(eventually laser light) will emerge from the optical output even though
the source indicator lamp is off! This happens even when the OLA is not
connected to the mains or is switched off!
Figure 1-6
Setup for Measuring the Reference Power
Head Input A
Head Input B
Optical Input
Optical Output
Head Input A
Head Input B
Optical Input
Optical Output
3 dB
Coupler
Pol. Ctrl.
Internal
Source(s)
Signal Processing and Display
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