Valhalla Scientific 4300C, Руководство по эксплуатации

Страница: 25 / 84

23
Taking Standard Measurements
To make a measurement, select to proper range and engage the Test Current. Always be sure to disengage
the Test Current after each measurement or before disconnecting the load and/or leads from the
instrument.
Setting the Range
The 4300C has 3 voltage settings and 6 current ranges. The combination of the two result in 18 possible
resistance measurement ranges.
Voltage Setting
20mV 200mV 2V
Cur
rent
Range
10A 1) 2mΩ 7) 20mΩ 13) 200mΩ
1A 2) 20mΩ 8) 200mΩ 14) 2Ω
.1A 3) 200mΩ 9) 2Ω 15) 20Ω
10mA 4) 2Ω 10) 20Ω 16) 200Ω
1mA 5) 20Ω 11) 200Ω 17) 2kΩ
.1mA 6) 200Ω 12) 2kΩ 18) 20kΩ
The two keys labeled F.S. Voltage are used to change the voltage setting. The
ñ
key is used to increase the voltage setting and the
ò
key is used to decrease the
setting.
Within a voltage setting there are six possible Ohm Ranges. The two keys labeled
Ω Range are used switch between the ranges. The
ñ
key is used to increase the
range and the ò key is used to decrease the range. As the Ohms range increases,
the current range decreases and vice versa.
Test Current
To engage or disengage the Test Current press the Test Current key located
on the front panel. A red LED within the Test Current key indicates the
status of the current source.
The current source may also be turned on and off via a command from one of the interfaces, or by a
remote footswitch using Option "RS".