Installation - 3

Digital I/O Connections

As shown in Table 3-3 and Figure 3-11, the FLT/INH connector can also be configured as a digital I/O port. Information on programming the digital I/O port is found in chapter 5 and under [SOURce:]DIGital:DATA and [SOURce:]DIGital:FUNCtion commands in chapter 8. The electrical characteristics of the digital connector are described in appendix A.

PIN

1

2

3

4

Table 3-3. FLT/INH DIGital I/O Connector

FAULT/INHIBIT

DIGITAL I/O

FLT Output

Output 0

FLT Common

Output 1

INH Input

Input/Output 2

INH Common

Common

 

Digital Output

+16.5V Max.

Ports 0, 1, 2

Coil Current

TTL, AS, CMOS, HC

0.25A Max.

 

NOTE: Connectors are removable

Relay Driver

Ports 0, 1, 2

(contains internal clamp diodes for inductive flyback)

Digital Input

Port 2

INH FLT

4 3 2 1

. . . .

+ - +

A) Relay Circuits

B) Digital Interface Circuits

 

 

Figure 3-11. Digital I/O Examples

Computer Connections

The dc source can be controlled through an GPIB interface. Agilent 66111A and 66311B/D units can also be controlled through an RS-232 interface.

GPIB Interface

Follow the GPIB card manufacturer’s directions for card installation and software driver setup.

Each dc source has its own GPIB bus address, which can be set using the front panel Address key as described in chapter 5. GPIB address data is stored in non-volatile memory. The dc source is shipped with its GPIB address set to 5.

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Agilent Technologies 66111A Digital I/O Connections, Computer Connections, Gpib Interface, FLT/INH DIGital I/O Connector

66111A, 66309B, 66311B, D specifications

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