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IEEE-Common Commands
command:
syntax:
description:
parameters:
response:
example:
command:
syntax:
description:
parameters:
response:
example:
HP 8163A Lightwave Multimeter, HP 8164A Lightwave Measurement System,
& HP 8166A Lightwave Multichannel System User's Guide, E1299
IEEE-Common Commands
"Common Commands" on page 22 gave a brief introduction to the IEEE-
common commands which can be used with the instruments. This section gives
fuller descriptions of each of these commands.
*CLS
*CLS
The CLear Status command *CLS clears the following:
• Error queue
• Standard event status register (SESR)
• Status byte register (STB)
After the *CLS command the instrument is left waiting for the next command. The instru-
ment setting is unaltered by the command, although *OPC/*OPC? actions are cancelled.
none
none
*CLS
*ESE
*ESE<wsp><value>
0 ≤ value ≤ 255
The standard Event Status Enable command (*ESE) sets bits in the Standard Event Status
Enable Mask (SESEM) that enable the corresponding bits in the standard event status reg-
ister (SESR).
The register is cleared:
• at power-on,
• by sending a value of zero.
The register is not changed by the *RST and *CLS commands.
The bit value for the register (a 16-bit signed integer value):
Bit
Mnemonic
7 (MSB)
Power On
6
Not Used
5
Command Error
4
Execution Error
3
Device Dependent Error
2
Query Error
1
Not Used
0 (LSB)
Operation Complete
none
*ESE 21
Instrument Setup and Status
Decimal Value
128
0
32
16
8
4
0
1
45
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