Fluke Biomedical 35080B - Manual (Page 11)

Operation
Battery Check
2
2-1
Section 2
Operation
Prior to taking measurements with the Model 35080B kVp Divider, it is suggested that the battery and
internal calibration be checked.
2.1 Battery Check
Connect the output of the Model 35080B kVp Divider to a DVM (digital voltmeter). Place the kVp divider
function switch in the “BAT CHK” position. The battery should be replaced if the voltage is less than 7.0
volts as the remaining battery life is quite short. The battery must be replaced if the voltage is less than
6.5 volts as the instrument will not function properly when the voltage supply is below this minimum level.
2.2 Internal Calibration Check
Connect the output of the Model 35080B kVp Divider to a DVM with ± 0.1% accuracy. Remove any filter
pack that may be inserted in the kVp Divider. Turn the function switch to the “CAL” position. After a short
delay, a voltage of 0.750 ± 1% will appear. This reading verifies the stability of the kVp Divider ratio
electronics. A 1% error in the kVp Divider gain will cause a maximum kV reading error of 0.75% of
reading. Refer to Section 10.4 for detailed information on calibration.
2.3 Filter Pack Selection
One Wide Range Filter Pack (37617) is provided as standard for the Model 35080B kVp Divider. See
Sections 4 through 9 of this manual for use of optional filter packs available from Fluke Biomedical,
Radiation Management Services.
2.4 Oscilloscope Zero and Offsets
It is assumed that the operator is familiar with the
use of a storage oscilloscope. The following
examples are for oscilloscopes with 8 major
divisions for vertical scales and sensitivity
selections of 0.1 V/div and 0.2 V/div. The selection
of time scales or triggering are not discussed in this
manual.
NOTE
NOTE