Agilent Technologies 54645A Instrukcja Obsługi Pobierz pdf (Strona 76)

Service Request Enable Register (SRER)

Setting the Service Request Enable Register bits enable corresponding bits in

the Status Byte Register. These enabled bits can then set RQS and MSS (bit

6) in the Status Byte Register.

Bits are set in the Service Request Enable Register using the *SRE command

and the bits that are set are read with the *SRE? query.

Refer to figure 6-2.

Example The following example sets bit 4 (MAV) and bit 5 (ESB) in the Service

Request Enable Register.

OUTPUT 707;"*SRE 48"

This example uses the parameter “48” to enable the oscilloscope to generate

an SRQ interrupt under the following conditions:

•

When one or more bytes in the Output Queue set bit 4 (MAV).

•

When an enabled event in the Standard Event Status Register generates a

summary bit that sets bit 5 (ESB).

Trigger Event Register (TRG)

This register sets the TRG bit in the status byte when a trigger event occurs.

The TRG event register stays set until it is cleared by reading the register or

using the *CLS command. If your application needs to detect multiple

triggers, the TRG event register must be cleared after each one.

If you are using the Service Request to interrupt a program or controller

operation, each time the trigger bit is set you must then clear the event

Status Reporting

Service Request Enable Register (SRER)

6-11

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 110 111

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Agilent Technologies 54645A Instrukcja Obsługi Strona 76