Power LED: Shows the Status of Power ON or Power OFF

TTL:  is use to input the data to the laser modulator in digital form

Laser TXR DEV-2783-06X:  The laser is connected to this port

ANLG:  is used to give analog input to the laser modules that support analog modulation

Infrared TXR DEV-2783-08 Series: IR transmitter allows the data to be modulated for the experiments related to the IR

Low Pass: Filter  low pass active filter

High Range Switch: A two-position selector switch for High time of 555 timer output waveform.

Low Range Switch:  A two-position selector switch for Low time of 555 Timer output waveform.

Range Selecting switch:   For selecting Range high and low.

Output (Q): A 10-pin socket for output of 555 Timer.

Generic Interface: This reserved socket is intended to be used by user custom designed boards. The user is free to devise a pin-out

Status LED’s: Four LED’s for indicating presence of TTL high logic

Digital Input/Output: Four sockets for output of the Logic Switches and providing logic input. When a TTL high in provided at this Digital Input Socket, corresponding status LED glows.

Logic Switches: Four logic switches for providing TTL logic level high (5V) and low (0V) at the corresponding output point of the sockets.

TX, Rx, RTS: Pin out of RS-232 for extension elsewhere on the trainer.

Direct Output from the solar cell that may be used as a battery or other similar tests

Solar RXR the connector where the solar cell is connected

Buffered Output is the output that is buffered and can be used for driving circuits or transistors which is not possible from the direct output

ANLG OUT Analog out from the IR demodulator

IR RXR this connector is used for interfacing the IR demodulator to the main trainer board

TTL Out TTL output from the IR demodulator