Fluke 35040 manual Set 300.0 V 100% Central Electrde Pos IC Bias 300.0 V CEP

35040

Operators Manual

ADC

Set: 300.0 V 100%

Central Electrde Pos

IC Bias: 300.0 V CEP

Figure 3-23. The Bias Select Screen With the Bias Set to a Positive Voltage

ADC	0.0 V	0%
Set:
Bias Off		V OFF
IC Bias:	0.0

Figure 3-24. The Bias Select Screen With the Bias Turned Off

ADC

Set: -150.0 V -50%

Central Electrde Neg

IC Bias:-150.0 V CEN

Figure 3-25. The Bias Select Screen With the Bias Set to a Negative Voltage

In the example of Figures 3-23 to 3-25, the maximum voltage setting is 300.0 V. Thus, 300.0 V is 100% of 300.0 V and -150.0 V is -50% of 300.0 V.

Use the UP and DOWN buttons to scroll through the customized bias settings. When the bias setting is selected, wait for the bias voltage to match the selection before pressing the RESET/MEASURE button. The top line of the display will read “WAIT Bias Not Ready” until the measured voltage matches the selection. If the RESET/MEASURE button is pressed while the bias voltage is changing, the bias may be set to the wrong voltage. While the bias voltage is changing, a current is produced that may cause an “Internal Reset Error”, see Section 3.9.12.

NOTE

Changing the bias setting automatically zeroes all measurement readings.

WARNING

To prevent an electrical shock, the Model 35040 Therapy Dosimeter bias should always be set to 0 volts or the instrument turned off when connecting or disconnecting an ion chamber or triaxial cable.

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