Promax PROLITE-23 Manual De Instrucciones página 52

Emitting optical jumper
4. Use the formula "FORWARD LOSS (dB) = P1 — P2", take the dBm reading on
the power meter (P3) in step 2) and the source output power value (P1) in
step 1). For example, if P2 = -8.50dBm, and P1=-6.85dBm, then the
FORWARD link loss is 1.65dB.
5. Connect laser sources and optical power meters to their respective patch
panel ports using the test jumpers, as shown in figure 15. Calculate the
reverse link loss using the formula "REVERSE LOSS (dB) = P1 — P3".
6. Report both forward and reverse loss values.
Page 16
Front end
Flange
Fiber to be tested
Figure 14.- Forward loss testing
USER'S MANUAL. PROLITE-23
Reverse end Flange
Receiving optical jumper
06-2008