Agilent Technologies 8935 Series Uživatelský manuál stáhnout pdf (Strana 172)

172 Chapter 6

O:\Manuals\E6380A_Progguid\Book\Advoper.fm

Advanced Operations

HP-IB Service Requests

Procedure for Generating a Service Request

The following steps outline a generalized procedure for properly setting

up the Test Set to generate a Service Request (SRQ) message to the

Active Controller. This procedure does not include instructions for

setting up the Active Controller to respond to the Service Request

message generated by the Test Set. Refer to the operating and/or

programming manuals for each controller for information describing

the controller’s capability to set up and respond to SRQ interrupts.

• For register groups with Condition Registers and Transition Filters

start at step 1.

• For register groups with no Condition Register or Transition Filters

start at step 5.

1. Determine which conditions, as defined by their bit positions in the

Message to be set TRUE if they occur.

2. Determine the polarity of the bit-state transition which will indicate

that the condition has occurred.

3. Set the Register Group Transition Filters to the correct polarity to

pass the bit-state transition to the Event Register.

4. Go to step 6.

5. Determine which conditions, as defined by their bit positions in the

to be set TRUE if they occur.

6. Set the correct bits in the Register Group Enable Register to

generate the Summary Message if the condition has been latched

into the Register Group Event Register.

7. If the Summary Message is a bit in a Register Group that is not the

Status Byte Register go to step 1.

8. Set the correct bits in the Service Request Enable Register for all

1 2 ... 167 168 169 170 171 172 173 174 175 176 177 ... 328 329

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Agilent Technologies 8935 Series Uživatelský manuál Strana 172