Anritsu ML2430A operation manual Profile Operation Mode

PROFILE OPERATION MODE PROCEDURES

a. Read the status register using the equivalent of a GPIB serial poll. Send the message:

!SPL

Note: There is NO terminator to this message.

The power meter will respond:

Px\n

x is the ASCII character determined by the value in the meter status register.

x = “B” gives a status register value of 01000010 binary. Comparing this with the status byte description in Section 6-7 of the manual will show that the SRQ and limits error bits are both set.

b. Alternatively the status register can be read directly using the command:

*STB?\n

This will respond:

Ry\n

y can be up to 3 digits and is the decimal representation of the status register.

y="66" gives a status register value of 01000010 binary. Comparing this with the status byte description in section 6-7 of the manual will show that the SRQ and limits error bits are both set.

8.Once the status register has been read, it must be cleared to allow further SRQ messages to be sent. Before the status register is cleared, further autodial actions (limits failure or sensor range error) should be disabled to prevent any un- necessary autodial attempts by the meter when already connected to a remote PC. To clear the status register, use the command:

*CLS\n

5-11PROFILE The ML2430A Series Power Meter can be used to view signals in Profile, Read- OPERATION MODE out, Power vs. Time and Source Sweep modes. This section describes setting up

and viewing signals in the Profile mode. Profile mode allows the viewing of a sin- gle channel (1 or 2 as set up in the Channel menu) plotted against time.

5-10 ML2430A OM