5700A/5720A Series II
Operators Manual
4-12
4-14. Special Functions Menu.
The softkey labeled “Special Functns” in the setup menu provides access to the AC Xfer
Choice and the Date Format feature, which lets you select one of three date formats
(m/d/y, d.m.y, and ymd). In remote, use DATEFMT to set the date format and
DATEFMT? to query the date format. The AC Xfer Choice feature activates another
softkey that lets you turn off the monitoring system that makes adjustments for load
changes. The AC Xfer OFF feature is available only in the ranges below 220V, at
frequencies below 120 kHz.
The AC Xfer OFF function remains active until the calibrator is reset or the power is
turned off. For remote control applications, the same feature is accessible through the
remote command XFER OFF. Send the command XFER ON to restore internal ac
transfers to normal operation.
Turn off internal ac transfers as follows:
1. Press the “Setup Menu” softkey.
2. Press the “Special Functns” softkey.
3. Press the “AC Xfer Choice” softkey so that ON appears. This turns on an “Intrnl
Xfers” softkey in the ac voltage function.
4. Press P twice.
5. After setting the output for an ac voltage, press the “Intrnl Xfers” softkey so that OFF
appears. This will inhibit internal transfers from being made after the output has
settled. It is particularly useful for making ppm level measurements at low
frequencies. Changing the calibrator's output will reinitiate transfers until the output
has settled.
4-15. Resetting the Calibrator.
At any time during front panel operation, you can return the calibrator to the power-up
state by pressing r. Pressing r does the following:
• Returns the calibrator to the power-up state: 0 mV dc, standby, internal guard, and
internal sense.
• Clears the stored values for limits, offset, scale, and error mode reference.
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