EXFO FVA-3150 Variable Attenuator - Manual (Page 75)

Variable Attenuator 69
A Technical Specifications
I
MPORTANT
The following technical specifications can change without notice.
The information presented in this section is provided as a reference
only. To obtain this product’s most recent technical specifications,
visit the EXFO Web site at www.exfo.com.
SPECIFICATIONS a
SINGLEMODE CONFIGURATIONS
Description
without monitor port with monitor port
Models FVA-3150-B FVA-3150-BM
Fiber type (μm) 9/125 9/125
Wavelength range (nm) 1250 to 1650 1250 to 1650
Maximum attenuation (dB) b *65 *65
Insertion loss c, d
Typical (dB) 1.0 1.5
Maximum (dB) 1.5 2.2
Attenuation setting resolution, typical (dB) ±0.002 ±0.002
Attenuation linearity (dB) e ±0.1 ±0.1
Attenuation repetability (dB), 2 m f ±0.01 ±0.01
Spectral uniformity, 1510 nm to 1605 nm (dB) g ±0.05 ±0.05
Spectral uniformity, 1450 nm to 1630 nm, typical (dB) g ±0.09 ±0.09
PDL, peak to peak (dB) h 0.15 0.2
Return loss, typical (dB) c, i 60 60
Maximum input power (dBm) 23 23
Settling time, including command 90 (for 0.1 dB step) 90 (for 0.1 dB step)
processing time, typical (ms) j
Transition speed, typical (dB/s) up to 23 up to 23
Shutter isolation (dB) >100 >100
Monitor ouput, typical (dB) k N/A 12.8
MULTIMODE CONFIGURATIONS
Description
without monitor port with monitor port
Models FVA-3150-C, D FVA-3150-CM, DM
Fiber type (μm) 50/125, 62.5/125 50/125, 62.5/125
Wavelength range (nm) 700 to 1350 700 to 1350
Maximum attenuation (dB) b *65 *65
Insertion loss c, d
Typical (dB) 1.3 1.5
Maximum (dB) 2.0 3.0
Attenuation setting resolution, typical (dB) ±0.002 ± 0.002
Attenuation linearity (dB) e ±0.1 ± 0.1
Attenuation repetability (dB) f ±0.01 ± 0.01
Return loss, typical (dB) c, d 40 40
Maximum input power (dBm) 20 20
Settling time, including command 90 (for 0.1 dB step) 90 (for 0.1 dB step)
processing time, typical (ms) j
Transition speed, typical (dB/s) up to 23 up to 23
Shutter isolation (dB) >100 >100
Monitor ouput, typical (dB) k NA 12.8
Notes
a. Valid at 23 °C ± 1 °C.
b. Valid at 1550 nm and below.
c. Measured at 1310 nm and 1550 nm for singlemode units and at 850 nm for multimode units.
d. Excluding connectors.
e. Measured at 1310 nm and 1550 nm (up to 60 dB) for singlemode units and at 850 nm and 1300 nm (up to 50 dB) for multimode units, with non-polarized light.
f.
Up to 45 dB attenuation.
g. For 20 dB attenuation relative to 0 dB attenuation
h. Up to 20 dB attenuation at 1550 nm.
i.
For FC/APC connectors.
j. Includes time for command via GPIB, interpretation and attenuation settling: 185 ms for 1 dB step; 3 s for full range.
k. Ratio between output port and monitor port, expressed in dB.