<unmask > is the decimal, hexadecimal (#H), octal (#Q), or binary (#B) value of the Condition register bit to be unmasked. (Bits 0, 6, 8, and 9 have corresponding decimal values of 1, 64, 256, and 512.)

The Event Register The Event register latches transition events from the Condition register as specified by the Transition Filter. Bits in the Event register are latched and remain set until the register is cleared by one of the following commands:

STATus:OPERation[:EVENt]?

*CLS

The Enable Register

The Standard Event Status Group

The Standard Event Status Register

The Enable register specifies which bits in the Event register can generate a summary bit which is subsequently used to generate a service request. The digitizer logically ANDs the bits in the Event register with bits in the Enable register, and ORs the results to obtain a summary bit.

The bits in the Enable register that are to be ANDed with bits in the Event register are specified (unmasked) with the command:

STATus:OPERation:ENABle <unmask >

<unmask > is the decimal, hexadecimal (#H), octal (#Q), or binary (#B) value of the Enable register bit to be unmasked. (Bits 0, 6, 8, and 9 have corresponding decimal values of 1, 64, 256, and 512.)

The Enable register is cleared at power-on, by specifying an <unmask > value of 0, or by executing the STATus:PRESet command.

The Standard Event status group monitors command execution errors, programming errors, and the power-on state.

The conditions monitored by the Standard Event Status register are identified below.

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

PON

unused

CME

EXE

DDE

QYE

unused

OPC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power-on (PON): Bit 7 is set (1) when an off-to-on transition has occurred.

Command Error (CME): Bit 5 is set (1) when an incorrect command header is received, or if an un-implemented common command is received.

Execution Error (EXE): Bit 4 is set (1) when a command parameter is outside its legal range.

170 Understanding the HP E1429 Digitizer

Chapter 3

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HP E1429A manual Standard Event Status Group, Standard Event Status Register, Pon, Cme Exe Dde Qye, Opc