HP 64782 User Manual page 311

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Table of Contents

Making Coordinated Measurements

To connect to the rear panel BNC

1 Connect one end of a 50-ohm coaxial cable with male BNC connectors to the HP 64700 BNC

receptacle and the other end to the appropriate BNC receptacle on the other measuring instrument.

The BNC connector is capable of driving TTL level signals into a 50-ohm load. (A positive rising edge

is the trigger signal.) It requires a driver that can supply at least 4 mA at 2 volts when used as a

receiver. The BNC connector is configured as an open-emitter structure which allows for multiple

drivers to be connected. It can be used for cross-triggering between multiple HP 64700Bs when no

other cross-measurements are needed. The output of the BNC connector is short-circuit protected

and is protected from TTL level signals when the emulator is powered down.