Optical Spectrum Analyzers Chapter 11: Technical data
Rev D, June 16, 2022 Page 36
11.2. Model-Specific Specifications
a. Limited by the bandwidth of the detectors and the optics.
b. Minimum detectable power per nanometer using Zero Fill = 0 and the highest resolution and sensitivity settings.
c. The window is removable: SM05 thread for OSA20xC and SM18 thread for Redstone OSA305.
d. Specified in high-temperature mode. In low-temperature mode, the wavelength range is 1.0
- 2.5 µm.
e. Specified in low-temperature mode over 1.0
- 2.5 µm. In high-temperature mode, the level sensitivity is -65 dBm/nm
over 1.0
- 2.6 µm.
11.3. Update Frequency
11.3.1. OSA20xC
11.3.2. Redstone OSA305
11.4. Absolute Maximum Ratings
a. The OSA and the Windows
®
laptop each come with a region-specific power cord.
b. Limited by the damage threshold of the internal components.
Item # Wavelength Range
a
Level Sensitivity
b
Free-Space Input
Window Material
c
Operating
Temperature
OSA201C 350 - 1100 nm
-50 dBm/nm (350 - 500 nm)
-60 dBm/nm
500 - 1100 nm
Uncoated CaF
2
10°C to 40°C
OSA202C 600 - 1700 nm
-65 dBm/nm (600 - 700 nm)
-70 dBm/nm
700 - 1700 nm
OSA203C
1.0 - 2.6 µm
d
10 000 - 3846 cm
-1
-70 dBm/nm
e
OSA205C
1.0 - 5.6 µm
10 000 - 1786 cm
-1
-40 dBm/nm
OSA207C
1.0 - 12.0 µm
10 000 - 833 cm
-1
-30 dBm/nm (1.0 - 2.0 µm)
-40 dBm/nm
2.0 - 12.0 µm
Uncoated ZnSe 10°C to 35°C
Redstone
OSA305
1.0 - 5.6 µm
10 000 - 1786 cm
-1
-65 dBm/nm (1.0 - 1.5 µm)
-70 dBm/nm
1.5 - 5.6 µm
Uncoated CaF
2
10°C to 40°C
Time Between Updates (Update Frequency)
Sensitivity
Resolution
Low High
Low 0.5 s (1.9 Hz) 1.8 s (0.6 Hz)
Medium Low 0.8 s (1.2 Hz) 2.9 s (0.3 Hz)
Medium High 1.5 s (0.7 Hz) 5.2 s (0.2 Hz)
High 2.7 s (0.4 Hz) 9.5 s (0.1 Hz)
Time Between Updates (Update Frequency)
Sensitivity
Resolution
Low Medium Low Medium High High
Low 1.6 s (0.64 Hz) 2.0 s (0.51 Hz) 3.7 s (0.27 Hz) 9.5 s (0.11 Hz)
Medium 3.1 s (0.32 Hz) 4.1 s (0.24 Hz) 8.6 s (0.12 Hz) 23 s (0.04 Hz)
High 7.8 s (0.13 Hz) 10 s (0.10 Hz) 22 s (0.05 Hz) 63 s (0.02 Hz)
Specification Value
Input Voltage
a
100 - 240 VAC, 47 - 63 Hz, 250 W (Max)
Relative Humidity <80%, Non-Condensing
Storage Temperature -10 °C to 60 °C
Optical CW Power (Max)
b
20 mW (13 dBm)