Profile Operation Mode Procedures
6-10 PN: 10585-00001 Rev. P ML2437A/38A OM/PM
6-10 Profile Operation Mode
The ML243xA Power Meter can be used to view signals in Profile, Readout, 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 single channel (1 or 2 as set up in the Channel
menu) plotted against time.
To view the time profile of a signal, enter the PROFILE mode via SYSTEM > SETUP >
MODE (toggles through READOUT, PROFILE and Power vs. Time). Parameters needed to
set up a PROFILE display are:
1. TRIGGER > SETUP provides access to a special TRIGGER configuration options. The
default mode is CONTINUOUS which provides for a non-synchronized, oscilloscope
type display. This type of display is useful for general monitoring of a signal and
showing its variation over time. The settings for the DELAY and gate WIDTH provide
the points at which the measurement is triggered and read out of the cursor. The other
options are similar to other triggering modes.
2. SYSTEM > PROFILE sets up the channel (1 or 2) to be displayed and the time-axis, as
well as the way that the data is displayed (for example, monitoring the minimum or
maximum data over time). Note that in all cases, the PROFILE > CHANNEL selection
(1 or 2) relates to a measurement channel set up in the CHANNEL menu, not directly
to the A or B sensors.
3. SYSTEM > CONTROL provides control over the readout and CURSORs as well as the
scaling of the display. From the CURSOR menu (using the << and >> arrows) the
positions of the readout cursors can be adjusted. The cursors directly relate to the
DELAY and gate WIDTH parameters in the TRIGGER > SETUP menu, but allow for
visual movement of the parameters on the display itself. The TRIGGER > SETUP
menu requires direct entry of the actual parameters when the timing criteria is known.
Typical Setup
A typical situation with no triggering (CONTINUOUS):
1. Select SYSTEM > SETUP > PRESET to reset the instrument to the standard default
conditions (see Appendix B for a listing of the system defaults).
Note
To operate the Universal power sensors in profile mode Option 1 must be fitted.
Activate option 1 mode before selecting profile mode under the SENSOR > Setup
OPTION FAST CW menu.
Note
If the DATA HOLD mode is set to display min or max data, as opposed to the
default (NORMAL), the display will continue to track the min/max until the DATA
HOLD mode is returned to NORMAL.
Note
Dynamic range is limited in Profile mode to DC ranges only. For maximum dynamic
range, measured signals need to be repetitive (not single-shot) when profiling over
less than 30 ms width. For collection periods longer than 30 ms, single-shot
profiles can be measured over the full dynamic range.
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