BNC 725 - Manual (Page 9)

9
OVERVIEW OF MODEL 725 CONTROLS
The Model 725 is the control unit and interface for your experimental equipment. You will
program it using the timerPRO software. Once you’ve designed, tested and downloaded your
program, you can control the Model 725 from the computer, or you can run it in stand-alone
mode.
Indicators and controls on the Model 725 front panel will help you run your experiments. You’ll
learn all about these functions in the Experimenting section later. For now, we’ll give you a short
tour of the inputs, outputs and controls so you can work with the unit while you learn to use the
timerPRO software.
Back Panel Inputs and Outputs
The back panel includes the following connectors:
- an internally-fused jack for a standard 100–250 VAC power cord
- a 9-pin RS-232 jack to connect to the Com port of your PC
- eight BNC channel input jacks (in1–in8), normally high (5 V)
- eight BNC channel output jacks (outA–outH), normally low (0 V)
- a BNC input jack for an external clock source.
The inputs and outputs will accept any device into that sends or receives TTL-compatible signals.