Required Accessories
(3) one-meter patch cables – (ensure proper connector type and fiber type)
(2) fiber optic adapters/couplers – (ensure proper connector type)
Patch Cable Insertion Loss
Patch cables should be tested periodically to ensure that they are okay to
use for testing. Use the following procedure to test both multimode and
singlemode patch cables.
If testing at more than one wavelength, this
procedure must be performed for each wavelength
separately.
Connect the ZOOM 2 to a fiber optic light source using the 3-
jumper
reference method as shown at right. Power on the light
source according to manufacturer instructions.
Press
to power on the ZOOM 2 optical power meter, if
necessary.
Press
until the wavelength on the ZOOM 2 matches the output wavelength of the light source.
Press and hold
for approximately 2 seconds to set the
reference. The ZOOM 2 will change to show loss in ‘dB’, and the
loss value should be very close to 0.00 dB.
Setting a reference is commonly referred to as
“zeroing”.
Remove the center cable as shown at right.
Insert a patch cable under test between the two fiber optic
adapters/couplers, then record the loss value in ‘dB’.
Repeat steps
and
for each patch cable being tested.
UNITS
ZERO
7
TEST PROCEDURES
PATCH CABLE TESTING
3-jumper Reference
Method Setup
Insertion Loss Test
SC connectors shown here;
connector style may vary
LIGHT SOURCE
CONNECTOR PORTS
Do NOT insert APC connector
into either light source port
SC connectors shown here;
connector style may vary
LIGHT SOURCE
CONNECTOR PORTS
Do NOT insert APC connector
into either light source port
