Front Panel Operation - 5

8 - Programming External Protection and the Digital Port Functions

Your dc source is shipped with the output port function set to RIDFI mode. In this mode the port functions as a remote inhibit input with a discrete fault indicator output signal. You can also configure the port to act as a Digital Input/Output device.

To configure the RIDFI mode of the port, proceed as follows:

 

Action

Display

1.

On the Function keypad, press Output.

*RST

2.

Scroll through the Output menu by pressing θ. The PORT command lets you select

PORT RIDFI

 

either the RIDFI or the DIGIO function. Press Enter when done.

 

3.

Scroll to the RI command to configure the Remote INHibit indicator. Use the ∪ and

RI LIVE

 

⊃ keys to select either LIVE or LATCHING, either of which enable the RI indicator.

RI LATCHING

 

Then press Enter. With RI enabled, a low-true on the INH input will disable the

 

 

output of the unit. LIVE causes the output of the unit to track the state of the INH

 

 

input. LATCHING latches the output of the unit off in response to the inhibit signal.

 

4.

Access the Output menu again and scroll through the menu. The DFI command lets

DFI ON

 

you enable the Discrete Fault Indicator. Use the ⊃ key and select ON to enable the

 

 

FLT output. Then press Enter. With the FLT output enabled, the open-collector logic

 

 

signal can be used to signal external devices when a fault condition is detected.

 

5.

Scroll to the DFI:SOUR command to select the internal source that drives this signal.

DFI:SOUR RQS

 

Use the ⊃ key to select from the RQS or ESB bits, or the Operation or Questionable

DFI:SOUR ESB

 

status registers. Then press Enter. Status summary bits are explained in chapter 7.

DFI:SOUR OPER

 

 

DFI:SOUR QUES

To configure the DIGIO mode of the port, proceed as follows:

 

Action

Display

1.

On the Function keypad, press Output.

*RST

2.

Scroll through the Output menu by pressing θ. The PORT command lets you select

PORT DIGIO

 

either the RIDFI or the DIGIO function. Press Enter when done.

 

3.

Scroll to the DIGIO command to set and read the Digital Input/Output Port. Press

DIGIO 5

 

Enter Number and enter a number from 0 to 7 to program the three bits (0

 

 

programs all bits low; 7 programs all bits high). Press Enter when done.

 

9 - Setting the GPIB Address and Programming Language

Your dc source is shipped with the GPIB address set to 5. This address can only be changed from the front panel using the Address menu located under the Address key. This menu is also used to select the programming language.

Set the GPIB address as follows:

 

Action

Display

1.

On the System keypad, press Address.

ADDRESS 5

2.

Enter the new address. For example, Press Enter Number, 7, Enter.

ADDRESS 7

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Agilent Technologies 66111A, D, 66311B Setting the Gpib Address and Programming Language, Set the Gpib address as follows
Page 62 Page 64

66111A, 66309B, 66311B, D specifications

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