安捷伦 Agilent 81623A

Agilent 81623A Ge Optical Head, 5mm Diameter

Analog Output

The analog output is the BNC connector on the back of the 

optical head. It outputs a voltage directly proportional to the 

strength of the optical signal at the optical input in the current 

range. The analog signal is always in the range between 0 and 

2V, 2V corresponding to a full power input signal in the current 

range, 0V corresponding to no input signal.

During autoranging, the level to which 2V corresponds changes. 

You should disable autoranging when using the analog output.

Disabling Autoranging

Select the best range for the application using the mainframes 

user interface. Select <Menu>, <Range Mode>, <Manual> and 

then choose from the list of ranges.

Applications

Possible applications for the analog output are:

• to close the feedback loop controlling the current supplied to 

a laser

• to aid positioning the system for fiber alignment tasks

• to monitor optical power on an oscilloscope

The analog signal reacts instantaneously to the input signal, 

whereas the power shown on the display is subject to averaging.

安捷伦 Agilent 81623A厂家