Agilent Technologies 664xA, 665xA, 667xA, 668xA, AGILENT Model 6653A: 3145A-00551, Model 6641A: 3217A-00111, Model 6645A: 3215A-00111, Model 6651A: 3130A-00171, Model 6652A: 3201A-00381, Model 6654A: 3148A-00391, Model 6655A: 3152A-00176, Model 6671A: 3129A-00218, Model 6672A: 3138A-00101, Model 6673A: 3138A-00101, Model 6674A: 3133A-00161, Model 6675A: 3138A-00101, Model 6680A: 3302A-00101, Model 6681A: 3250A-00101, Model 6682A: 3339A-00101, Model 6683A: 3339A-00161, Model 6684A: 3339A-00101

Digital Port Functions 123

Relay Link Operation

The digital port can be configured to provide relay control outputs for the Agilent 59510A or 59511A Relay Accessory.

Refer to Figure D-1 for the pin assignments of the mating plug.

Not used with units that output more than 50 amps.

RLY SEND

(pin 1) Provides the serial data to control the relays in the Relay Accessory.

(pin 2) (Not used)

RLY RTN

(pin 3) Receives the data readback that indicates the status of the relays in the Relay Accessory.

Common

(pin 4) Common connection for the RLY SEND and RLY RTN lines.

Figure D-6 shows how to connect your power supply to an Agilent 59510A or 59511A Relay Accessory when the digital

port is configured for relay link operation. An error will be generated if you attempt to program the relay box without first

configuring the digital port for relay link operation. For more information about programming the relay, refer to

OUTP:REL[:STAT] in Chapter 3 of the Programming Guide. For more information about the Relay Accessory, refer to its

manual (see Table 1-6).

Figure D-6. Relay Link Connections