Specifications at a glance for the 81625A:
 
  - Wavelength Range: 850 to 1650 nm
   - Detector Type (Sensor Element): InGaAs
   - Detector Size (diameter): 5 mm
   - Power Range: +20 to -80 dBm
   - Wavelength Accuracy (Uncertainty): +/- 4.0% (950 to 1630 nm)
   - No Analog Output
 
Additional Information
 
The heads come with a magnetic D-shape adapter and provide a safe stand. The optical heads have to be operated with the single (Agilent 81618A) or dual (Agilent 81619A) interface modules.
 
These modules are controlled in any configuration in any of the mainframes 8163B, 8164B and 8166B. A highly flexible connector interface palette addresses connectorized, bare fiber or open beam applications.
 
Applicable Fiber Type: Standard Single-mode And Multimode max. 100 um core size, NA < 0.3
 Linearity: CW +20 to -60 dBm (950 - 1630 nm)