ML4803A Emulation Commands GPIB Operation
8-86 PN: 10585-00001 Rev. P ML2437A/38A OM/PM
Output Requests
There are three commands to request output from the ML4803A: OPW for a reading, ODT for
the cal factor, offset and reference values, and OMR for memory store settings. If these output
requests are received simultaneously, only the data for the command received last will be
available.
Unsupported Commands
The following ML4803A commands are not supported in the ML243xA Power Meter GPIB
interface:
PCT
VSW
RDB
DBV50
DBV75
VLT50
VLT75
These commands are read in without errors, but are ignored by the system.
Bit 6 RQS bit Indicates that the device is
requiring service (SRQ).
Figure 8-3. Status Byte Bits
Table 8-6. Status Byte
Bit Definition Description
01
Zero execution
Cal execution
Output data ready
Command error
RQS bit
234567
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