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4-10
Programming Commands
Common Commands
offset, signal-to-noise auto mode on/off, wavelength limit on/off, wave-
length limit start, wavelength limit stop, and signal-to- noise average
count.
*SRE
The *SRE (service request enable) command sets the bits in the service
request enable register.
Syntax
*SRE <integer>
*SRE?
<integer> is defined as an integer mask from 0 to 255.
Description The service request enable register contains a mask value for the bits
to be enabled in the status byte register. A bit set to one in the service
request enable register enables the corresponding bit in the status byte
register to generate a service request. A zero disables the bit. The fol-
lowing table lists the bits in the service request enable register and
what they mask.
The service request enable register is cleared when the instrument is
turned on. The *RST and *CLS commands do not change the register.
The *SRE? query returns the value of the service request enable regis-
ter.
Table 4-16. Service Request Enable Register
Bit
a
a. High enables the status byte register bit.
Bit Weight Enables
7128Not Used
664Not Used
5 32 Event Status Bit (ESB)
4 16 Message Available (MAV)
38Not Used
2 4 Error queue status
12Not Used
01Not Used