2-2
IM 2560A-01EN
2.2 DC Voltage, DC Current, and Resistance
Sourcing
The 2560A is a DC calibrator that sources DC voltage, DC current, and resistance. It also sources
thermoelectromotive force and resistance that simulate those of a temperature sensor. This section
describes the DC voltage, DC current, and resistance sourcing features. For a description of the
thermoelectromotive-force and resistance sourcing features, see section 2.3.
DC Voltage Sourcing
The source range and output current for each voltage range are shown below. The 2560A outputs
the specified DC voltage, within the range limited by the maximum output current, to the load circuit
connected to the output terminals.
Range
Source Range
1
Maximum Output Current
2
Low voltage-current output terminals (OUTPUT 1)
High voltage output terminals (OUTPUT 2 plug-in terminals)
Range
Source Range
1
Maximum Output Current
2
100
1
10
mV
V
V
122.400
1.22400
12.2400
±
±
±
mV
V
V
mA
or higher
3
mA
mA
12
120
120
Approx.
Approx.
100
1000
V
V
122.400
1224.00
±
±
V
V
mA
mA
30
10
Approx.
Approx.
1 If you set the main setting (MAX) to 120% of the range, the main setting (MIN) to 0% of the
range, the divider value n/m to 1, and the deviation to –2%, up to 122.4% of the range can be
generated.
2 Can be output when the source range is between 1% and 120% of the range.
3 In the 100 mV range, the output voltage may drop significantly when the output current exceeds
12 mA. Connect a load that will not cause the output current to exceed 12 mA.
The 2560A can also perform sink operation (see the next page). But it is not defined as part of the
instrument’s specifications.
DC Current Sourcing
The source range and output voltage for each current range are shown below. The 2560A outputs
the specified DC current, within the range limited by the maximum output voltage, to the load circuit
connected to the output terminals.
Range
Source Range
1
Maximum Output Voltage
2
Range
Source Range
1
Maximum Output Voltage
2
Low voltage-current output terminals (OUTPUT 1)
100
1
10
100
1
µA
mA
mA
mA
A
122.400
1.22400
12.2400
122.400
1.22400
±
±
±
±
±
µA
mA
mA
mA
A
V
V
V
V
V
30
30
30
30
10
Approx.
Approx.
Approx.
Approx.
Approx.
Large current output terminals (large binding posts of OUTPUT 2)
10
30
A
A
12.2400
+36.720
±
0 to
A
A
V
V
2
1.5
Approx.
Approx.
1 If you set the main setting (MAX) to 120% of the range, the main setting (MIN) to 0% of the
range, the divider value n/m to 1, and the deviation to –2%, up to 122.4% of the range can be
generated.
2 Can be output when the source range is between 1% and 120% of the range.
