Table 4. OPM Test Limits - Continued
OPM indications
Wavelength
Lightwave
(dBm)
(nm)
Min
Max
1310
-10
-10.35
-09.65
1310
-20
-20.50
-19.50
1310
-50
-50.50
-49.50
15502
-50
-50.50
-49.50
1550
-20
-20.50
-19.50
1550
-10
-10.35
-09.65
1550
-6
-06.50
-05.50
1Remove
FOCUS-SWCM from test setup and install FOCUS-LWCM. Position
WAVELENGTH switch to 1310 nm.
2 Position FOCUS-LWCM WAVELENGTH switch to 1550 nm.
b. Adjustments
CAUTION
Use ESD precautionary procedures when touching, removing or
installing circuit card assemblies.
(1) Ensure OPM power is turned OFF.
(2) Remove six screws from back of OPM case.
(3) Carefully lift BACK ASSEMBLY up and away from MAIN BOARD and
BACK ASSEMBLY
M AIN BOARD
SCREW
(1 of 6)
DETECTOR
PORT
KEYPAD ASSEM BLY
Figure 2. OPM
back assembly removal from main board and keypad assembly.
(4) Remove six screws from MAIN BOARD (fig. 3).
7