XITRON 2000I, Руководство пользователя

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32
2000I & 2000M User Guide, Rev B
1. If the displayed output level is
: +1.000000 V
2. Press the +/- key to change the output level to:
-1.000000 V
—And—
1. If the displayed simulated temperature is:
+100.00ºC R
2 .
Press the +/- key to change the simulation to:
-100.00ºC R
Note that unlike voltage or current output levels, the limits of available
simulation temperatures are not identical in both polarities (in general). If the
attempted temperature exceeds these limits, then the simulation temperature
will be set to the limit at the requested polarity and a warning message will be
displayed for approximately two seconds.
Adjusting Output Level or Simulated Temperature
The 2000 instruments allow you to incrementally step up, or down, the output
level and to incrementally step up, or down, the hot junction simulation
temperature. Use this “Adjust” mode to perform calibration of an external
unit of equipment. During a calibration procedure the 2000 instrument will
display each modified output level of the equipment being calibrated. This
function allows for any error in the equipment to be hightlighted. This section
describes the method used to perform this action.
•
To access “Adjust” mode:
1. Press the MNU key and then an arrow key: 2, 4, 6, or 8 repetitively until
the adjust choice displays:
< Start Adjust >
2. Press any of the Units/Enter keys (V, A, ºC or ºF
)
to select the “Adjust”
mode. The display then returns to displaying the selected output level,
with the least significant displayed digit flashing (showing the size of the
increment that will be used).
During the “Adjust” mode of operation, the following changes to the display
format occur:
•
The display no longer shows the “Stby” characters at the right hand end
of the display when in “Standby” mode.