Getting Started

The index "x" in names relates to the channel number, for positions and pin numbers please refer to the board schematic.

Choose operation modes and configuration by setting jumpers MODx and STAGES; refer to Appendix A, tables 2 and 3.

Set required gains with jumpers GAINx and/or potentiometers RGAINx; again refer to Appendix A, table 4

Connect photodiode(s) to either terminal INx or SOCKETx. The right pins of screw terminals INx are the inputs, the left pins equal to GND. If using the sockets the upper pinhole is the input and must be plugged with one photodiode pin in any case. Other pinholes are grounded and may be used as required. Polarity of the photodiodes within sockets depends only on desired output voltage polarity.

Connect arbitrary voltmeter(s) to screw terminals OUTx. Right pin is the output, left pin equals to GND.

Connect the power supply to screw terminal PWR. For dual power supply use top terminal for negative, middle for GND and bottom terminal for positive voltage. A single supply must be connected with positive pole to bottom pin and GND to top pin, middle pin is left open.

Note:In the case of a single supply there is a floating virtual ground on the middle terminal to which the inputs and outputs relate and which must not be connected to power supply GND.

Adjust offsets for all channels. To do this shorten inputs for voltage amplifiers and leave inputs open (or insert photodiodes and darken them to compensate dark currents as well) for transimpedance stages. Now adjust the output voltages to 1 mV or less by potentiometers POx.