KEPCO BIT 4886 Operator Manual - Manual (Page 32)

3-10
BIT 4886 120413
3.3.2.1 CALIBRATION BASICS
CAUTION: Before performing calibration, set BOP OUTPUT to OFF and connect short
across BOP output, then set OUTPUT to ON and Voltage to 10V. It is necessary
to wait 10 minutes before calibrating the unit to allow for thermal stabiliza-
tion. After 10 minutes, set OUTPUT to OFF and remove short from BOP output,
then proceed with calibration.
All adjustments are done using the six arrow buttons of the Calibration Panel (see Figure 3-4
and Table 3-4). The double arrow buttons
!
and
"
either increase (
"
) or decrease (
!
) the
output five steps at a time; the " and # buttons either increase (#) or decrease (") the out-
put one step at a time. The triple arrow buttons <<<— and —>>> either increase (—>>>) or
decrease (<<<—) the output 80 steps at a time The
!
,
"
, ", and # buttons only work within
the 80-step window established by <<<— and —>>>.
For MAX and MIN Calibrations fine adjustment is done using the ! , " , ", and # buttons. If
the value can not be set within the specified tolerance using the fine adjustment, use the coarse
adjustment to increase (—>>>) or decrease (<<<—) the output as needed, then use the fine
adjust buttons to set the value within tolerance. Where large adjustment is necessary, <<<—
and —>>> can be used first to bring the output close before using the
!
,
"
, ", and # but-
tons.
FIGURE 3-4. CALIBRATION PANEL
TABLE 3-4. CALIBRATION PANEL FUNCTIONS
BUTTON OR WINDOW Function
START button Initiates calibration.
Text box (Adjacent to START button) Used to enter unit password.
VOLT button Initiates Voltage calibration.
CURR button Initiates Current calibration.
Message box (below VOLT buttons) Provides instructions about the calibration process.
White text window (above OK button) Displays the parameter currently being calibrated.
" button Fine Adjustment - Decreases the output value by one LSB.
# button Fine Adjustment - Increases the output value by one LSB.
!
button Adjustment - Decreases the output value by five LSBs.
"
button Adjustment - Increases the output value by five LSBs.
<<<— button Coarse Adjustment - Decreases the output value by 80 LSBs.
—>>> button Coarse Adjustment - Increases the output value by 80 LSBs.
OK button Enters the value displayed in the white text window.