2
ORL-55
JDSU
1 I
NTRODUCTION
Differences between the devices
All of the Return Loss Test Meters are calibrated at
1310 nm, 1550 nm and 1625 nm. Differences between
the devices can be found in the provided wavelengths:
Symbols used in this operating
manual
The following symbols, warnings and character formats
are used in this operating manual:
Type
Source
wavelengths
Receiver
diode type
2287/21
1310, 1550 nm
InGaAs
2287/22
1310, 1490, 1550 nm
InGaAs
2287/23
1310, 1550, 1625 nm
InGaAs
CAUTION
Caution
Follow the instructions carefully to
avoid damage to the device
.
WARNING
Warning
Follow the instructions carefully to
avoid damage to the device or injury
DANGER
Dange
Follow the instructions carefully to
avoid damage or severe injury!
DANGER
High Voltage
Follow the instructions carefully to
avoid damage or severe injury!
This safety instruction is given when
high voltage causes the danger
