EXFO OSA20 Getting Started page 4

Introducing the OSA20
Technical Specifications
Optical power Input power per channel
Total safe power
Level
sensitivity
Absolute level accuracy
Level linearity
Level/wavelength flatness
Level sampling
Sweep speed
Sensitivity
Sweep cycle/100 nm
Sampling rate
a. After user calibration performed after 1 hour warm-up time.
b. Native 17–24 pm over 1500–1620 nm (except in -55 dBm sensitivity), 17–26 pm over 1250–1700 nm.
c. Adjustable resolution bandwidth is calculated from the native bandwidth.
d. Adjustable over 6–400 GHz with 0.1 GHz step on the abscissa in THz.
e. HeNe laser at 1523 nm with ±2 nm span.
f. Laser at 1523 nm with ±50 nm span, excluding ±2 nm around peak.
g. Noise level of 99 % of all data points over 1520–1620 nm.
h. Typical values.
i. Over 18–28°C all sensitivity settings except ±0.6 dB in -55 dBm and Burst sensitivities.
j. Measured @ 1310 nm and 1500 nm, except ±0.3 dB in -55 dBm and Burst sensitivities.
k. Except ±0.35 dB in -55 dBm and Burst sensitivities, except for water absorption lines, over 18–28°C all sensitivity settings.
l. Sweep cycle /100 nm at -60 dBm sensitivity at center wavelength of 1475 nm.
The validity of specifications depends on operating conditions (see OSA20 User Guide,
Recalibrating the OSA20 on page 146).
2
Optical Measurement
single scan
g
with averaging
h
(Avg Nb of scans)
a., i
j
k
g.
l
≤ 20 dBm
≤ 25 dBm
High (0.5 nm/s): < -76 dBm (-78 dBm typ.)
High (0.5 nm/s): -80 dBm (Avg 3), -85 dBm (Avg 30),
-90 dBm (Avg 380)
-75 dBm (2 nm/s): -80 dBm (Avg 7), -85 dBm (Avg 70),
-90 dBm (Avg 800)
±0.4 dB at 1310 nm and 1550 nm
±0.07 dB over the full range (input level -50 to
+3 dBm)
±0.15 dB over 1500–1640 nm,
±0.25 dB over 1260–1680 nm
±0.01 dB over -60 to +20 dBm
-55 dBm at 2000 nm/s to -75 dBm at 2 nm/s
300 ms typ.
1 MHz typ.
OSA20