User Manual

3.6 Model 8947 Charge Unit Settings
58
Supplement ___________________________________________________
Before connecting sensors and probes
Range Setting
Auto-ranging cannot be used on channels for which the measurement mode is set
to
[Charge] or [Preamp].
For more on auto-ranging, refer to "3.3.5 Automatic Range Setting (Auto-Ranging
Function)" in the Instruction Manual.
Measuring Timing
In the following cases, five or six seconds should be allowed for input stabilization:
• Measurement Mode:
[Charge]
When switching the measurement range between one of the six high-sensitiv-
ity ranges and one of the six low-sensitivity ranges.
• Measurement Mode:
[Preamp]
After selecting preamp mode and before starting a new measurement
To avoid electric shock or damage to the measurement object, turn the
instrument off before connecting a sensor or probe to the BNC jack.
When the [Preamp] measurement mode is selected, internal power (15 V @
2 mA) is applied to the BNC jack when measurement starts.
5 to 6 seconds