28 Keysight N777xC Series Tunable Laser Family Programming Guide
3 Instrument Setup and Status
IEEE-Common Commands
Common Commands on page 16 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.
Command: *CLS
Syntax: *CLS
Description: The Clear Status (*CLS) command clears the status byte by emptying the error queue and clearing all the event registers
(SESR) including the Data Questionable Event Register, the Standard Event Status Register, the Standard Operation Status
Register and any other registers that are summarized in the status byte.
Parameters: none
Response: none
Example: *CLS
Command: *ESE
Syntax: *ESE<wsp><value>
0 ≤ value ≤ 255
Description: 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 register (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.
Parameters: The bit value for the register (a 16-bit signed integer value):
Bit Mnemonic Decimal Value
7 (MSB) Power On 128
6Not Used 64
5 Command Error 32
4 Execution Error 16
3 Device Dependent Error 8
2Query Error 4
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