Agilent Technologies 6631B Inhibit/Fault Indicator, Monitoring Both Phases of a Status Transition

Models: 6632B 6633B 66332A 6634B

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Monitoring Both Phases of a Status Transition

3 - Programming the DC Source

 

 

 

event to be summed into the Questionable summary bit. Use:

(1 + 2 + 16 = 19)

 

STATus:QUEStionable:PTR 19;ENABle 19

Step 3

Program the Service Request Enable register to allow both the Operation and the

 

Questionable summary bits from the Status Byte register to generate RQS. Use:

 

*SRE 136

(8 + 128 = 136)

 

Step 4

When you service the request, read the event registers to determine which Operation

 

Status and Questionable Status Event register bits are set, and clear the registers for

 

the next event. Use:

 

 

STATus:OPERation:EVENt;QUEStionable:EVENt?

Monitoring Both Phases of a Status Transition

You can monitor a status signal for both its positive and negative transitions. For example, to generate RQS when the dc source either enters the CC+ (constant current) condition or leaves that condition, program the Operational Status PTR/NTR filter as follows:

STATus:OPERational:PTR 1024;NTR 1024

STATus:OPERational:ENABle 1024;*SRE 128

The PTR filter will cause the OPERational summary bit to set RQS when CC+ occurs. When the controller subsequently reads the event register with STATus:OPERational:EVEN?, the register is cleared. When CC+ subsequently goes false, the NTR filter causes the OPERational summary bit to again set RQS.

Inhibit/Fault Indicator

The remote inhibit(INH) and discrete fault(FLT) indicators are implemented through the respective INH and FLT connections on the rear panel. Refer to Table 1-2 for the electrical parameters.

Remote Inhibit (RI)

Remote inhibit is an external, chassis-referenced logic signal routed through the rear panel INH connection, which allows an external device to signal a fault. To select an operating modes for the remote inhibit signal, use:

OUTPut:RI:MODE LATChing LIVE OFF

Discrete Fault Indicator (DFI)

The discrete fault indicator is an open-collector logic signal connected to the rear panel FLT connection, that can be used to signal external devices when a fault condition is detected. To select the internal fault source that drives this signal, use:

OUTPut:DFI:SOURce QUEStionable OPERation ESB RQS OFF

To enable or disable the DFI output, use:

OUTPut:DFI:STATe ON OFF

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Agilent Technologies 6631B manual Inhibit/Fault Indicator, Monitoring Both Phases of a Status Transition, Remote Inhibit RI