Valhalla Scientific 4300C, Руководство по эксплуатации

Страница: 16 / 84

14
Range Selection and Test Current Key
Range Selection
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 Ohms 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 Key
The Test Current key is used to turn the current source ON and OFF. 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 foot switch Option "RS".
Function/Numerical Keys
There are sixteen Function/Numerical keys which are used to
trigger the standard and/or optional ohmmeter functions and
for data entry. Figure 4 depicts the key arrangement while
table 3 lists a brief description of the keys and their use. The
Remote LED indicates the Remote/Local state of the
instrument. If the LED is on, the instrument is in remote state
and can only receive commands through one of its remote
interface ports. If the LED is off, the ohmmeter is in local state
will receive commands only from the front panel keys.
Figure 4