Calibrator
Set Output Limits
53
Multiply and Divide
The Calibrator output value (or reference value if you have edited the output with the knob) can be
multiplied by a factor of 10 by pushing
x
. Similarly, the output value (or reference value if you have
edited the output with the knob) can be divided a factor of 10 by pushing
*
. The output will be placed
in Standby if the multiplied value exceeds 30 V. Push
J
to continue. This feature is useful for
DUTs with ranges organized in decades.
Set Output Limits
The output limit feature helps prevent accidental damage to a DUT from overcurrent or overvoltage
conditions. Use the feature to preset the maximum positive and negative allowable voltage or current
output. These set entry limits prevent any output greater than the limit from being activated by entry
through the front-panel keys or the output adjustment controls. Positive limits for voltage and current
set the limits for ac voltage and current. Limit selections are saved in nonvolatile memory. Voltage
limits are expressed as rms values, and any voltage offsets are ignored.
Set Voltage and Current Limits
To set voltage and current entry limits:
1. Tap the
Setup
softkey.
2. Select
Instrument Setup
from the Setup Menu.
3. Under
Output Limits
, tap
Set
to open the output setup submenus.
4. Select the box for what you wish to limit, such as the box under
Voltage (V RMS), Upper Limit
.
5. Use the numeric keypad to enter the value.
6. Push the
E
.
7. Select
Back
to go to the prior Setup Menu screen or
Exit
to close the Setup Menu.
Synchronize the Calibrator Using 10 MHz IN/OUT
You can synchronize one or more Calibrators using the 10 MHz IN and OUT input/output on the rear
panel. Example applications of this capability are connecting two or more calibrators in parallel in the
current output function to sum their outputs, or using three calibrators to calibrate a three-phase power
meter.
The multiphase system can be configured in different ways. In some cases, a
Sync
button will be
necessary.
