User`s guide

1-8
General Information
Specifications and Regulatory Information
Table 1-4. Optical Interface Specifications and Characteristics
Insertion Loss
a
Single-mode switches
Multi-mode switches
a. Insertion loss does not include connectors. Include an additional 0.5 dB (
0.25 dB characteristic
) for each
connector.
1.0 dB
(0.7 dB)
0.8 dB
(0.6 dB)
Insertion Loss Stability
b
b. Drift of any channel relative to one assigned reference channel at ±3
°
C deviation of ambient temperature
over 7 day period.
±0.03 dB
(±0.025)
Repeatability
c
Sequential switching
Random switching
c. Repeatability measured after four (4) hours warm-up and with a one (1) second pause between
movements.
±0.008 dB
(±0.005)
±0.025 dB
(±0.01)
Optical Return Loss
d
Single-mode
Multimode
d. Excludes external pigtail backscatter and connector reflections.
58 dB
(62 dB)
20 dB
(25 dB)
Polarization Dependent Loss
e
e. Polarization dependent loss only applies to single-mode switches and is measured at 1550 nm.
0.05 dB
(0.02 dB)
Isolation
–
80 dB
(–100 dB)
Typical Switching Life
10 million cycles, minimum
Switching Time
Between adjacent channels
Each additional channel
330 msec
50 msec