Ac Voltage Calibration - Fluke 5820A Service Manual

5820A
Service Manual
1. Connect the Calibrator Mainframe's CHAN 1 connector to the HP 3458A input,
2. Set the HP 3458A to DCV, Auto Range, NPLC = 10, FIXEDZ = on.
3. Press the GO ON blue softkey.
4. Ensure the HP 3458A reading is 0.0 V dc
5. Press the GO ON blue softkey.
6. Calibration voltages 33 V and greater will automatically put the Calibrator
The Calibrator Mainframe will warn when the entered value is out of
bounds. If this warning occurs, recheck the setup and carefully re-enter the
reading insuring proper multiplier (i.e., m, , n, p). If the warning still
occurs, repair may be necessary.
7. Repeat steps 6 until the Calibrator Mainframe display indicates that the next steps
AC Voltage must now be calibrated. Continue with the next section.

3-9. AC Voltage Calibration

This procedure uses the same equipment and setup as dc voltage calibration. DC
voltages are measured and entered in the Calibrator Mainframe to calibrate the AC
Voltage function.
Set up the Calibrator Mainframe to Cal ACV. Press the NEXT SECTION blue softkey
until the display reads "The next steps calibrate Scope Calibrator ACV". Then follow
these steps to calibrate ac voltage.
1. Press the GO ON blue softkey.
2. Allow the HP 3458A dc voltage reading to stabilize. Enter the reading via the
The Calibrator Mainframe will warn when the entered value is out of
bounds. If this warning occurs recheck the setup and carefully re-enter the
reading insuring proper multiplier (i.e., m, u, n, p). If the warning still
occurs, repair may be necessary.
3. Repeat step 2 until the Calibrator Mainframe display indicates that the next steps
3-10
using the N to BNC cable and the BNC(f) to Double Banana adapter.
"Hardware Adjustments" in this chapter.)
Mainframe output in standby. When this occurs, press on the Calibrator
Mainframe to activate the output. Allow the HP 3458A dc voltage reading to
stabilize. Enter the reading via the Calibrator Mainframe front panel keypad, then
press ENTER.
calibrate ac Voltage. Press the STORE CONSTS blue softkey to store the new
calibration constants.
Calibrator Mainframe front panel keypad, then press ENTER.
calibrate WAVEGEN. Press the STORE CONSTS blue softkey to store the new
calibration constants.
10 V. If not, adjust R121 on A41 (see
Note
Note