# Connecting power supplies

This topic describes how to connect power supplies on the AG 2000 board.

Note: A power supply is not required on the AG 2000 loop start board.

## DID power supply

1. Set the power supply to -48 VDC.

2. Connect the DID power cable to the power supply.

This wire... | Which is labeled... | Goes to...
--- | --- | ---
Red | BATT | Minus terminal
Dark black | RETURN | Positive terminal
Light black | GND | Com

3. Plug the other end of the power cable to the power connector on the board.

4. If additional boards need power, use the internal 3-way power connector to connect up to three boards together.

Note: Test level 5708 provides the DID power supply and the DID power cable.

## Subscriber loop power supply

1. Set the power supply to 30 VDC.

2. Connect the subscriber loop power cable to the power supply.

This wire... | Which is labeled... | Goes to the...
--- | --- | ---
White | RING | Ring terminal
Red | -48 V | 48 terminal
Green | -24 V | 24/30 terminal
Black | RING RETURN | First return terminal
Black | BATT RETURN | Second return terminal
Light black | SHIELD DRAIN | Frame ground terminal

3. Plug the other end of the power cable to the power connector on the AG 2000 board.

4. If additional boards need power, use the internal 3-way power connector to connect up to three boards together.

5. Plug the power cord into an AC outlet. It is a universal AC input for 50/60 Hz, 100 to 240 VAC.

6. Adjust ringing frequency for normal sound from the telephone while ringing. The normal frequency for the United States and Canada is 20 Hz. The normal frequency for Europe is either 25 Hz or 50 Hz, depending on the country.

Note: Test level 5707 provides the subscriber loop power supply and the subscriber loop power cable. The ringing power supplies provided for S Connect boards cannot be used with the AG 2000 board.