If the photograph is clicked, it grows.

HP 81525A + 81533B Optical Head & Optical Head Interface
SOLD OUT sold
opt182






Sensor Element: InGaAs, 5 mm
Wavelength Range: 800-1650nm
Power Range: + 27 to -70 dBm
Display Resolution: 0.001 dBm. 100 pW
Applicable Fiber Type: Parallel beam, 9/125 µm to 100/140 µm, NA < 0.3
Accuracy: ± 3%

It works with the 81533B Interface Module in the 8153A, 8163A, 8164A, and 8166A mainframes.

Optical interface module for 8163,8164MainFrame