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ACMod output (port 1 only) is a TTL signal synchronized to the in
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ternal chopper (when used) of the signal channel. This signal can
be used for synchronization with external sources or when viewing
AC range (chopped) signals.
Leveling outputs - To allow the power meter to be used in a leveling loop, the sig
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nal channel output is available on the rear panel. The leveling loop will be broken
every time the signal channel autoranges. To overcome this, the outputs of
ranges 1 and 2 can be made directly available on the rear panel BNC connector.
This feature is only available as a NON DRAWN option. It can be selected from
the System|Rear Panel|BNC menu - PORT 1 for sensor A and PORT 2 for sen
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sor B. Leveling A(1) selects range 1 on sensor A. If the hardware is not available,
0 volts will be set on the appropriate output when selected.
For signal levels below –25 dBm on a diode sensor, the leveling outputs will not
be valid as the signal channel operates in chopping mode below this level.
TTL LEVEL (Input port 1 only)
When in Readout or Pwr vs. Time operation mode, this selects the
blanking input type, HIGH active or LOW active, you are providing.
The blanking input will be used if the Trigger|Setup|ARMING is set
to Blanking ON and the Sensor|Setup|Mode is set to Custom.
When in Profile operation Mode, the blanking input is ignored.
When in Source Sweep operation Mode, if the Blanking input is set
to HIGH, the ML24xxA uses the digital input to sync to. Your
sweeper must provide a Sequential Sync output which is connected
to the digital input of the meter.
If Blanking input is set to LOW, the ML24xxA does not use the digi
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tal input and therefore can be connected to a sweeper which does
not provide a Sequential Sync output. The ML24xxA will use the
Horizontal Ramp input only.
Printer
[PRNSEL]
Configures the rear panel printer port. Select from the listed com
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patible printers which include, but are not limited to, the following:
HP DeskJet 340
Canon BJC80
Other 300, 500, 600 Series and later HP printers are typically
compatible.
For proper operation with the ML2430A, the Canon BJC80 printer
must be set to the EPSON LQ emulation mode. Refer to the printer
manual for instructions on setting the emulation mode.
ML2430A OM 4-33
OPERATION SYSTEM MENU