1.5 Instrument settings
1 – 5
1.5
Instrument settings
This section will demonstrate the basic configurations of the DC205.
1.5.1
Sense
The SENSE setting selects 2-wire or 4-wire (remote sensing) for the
voltage source circuitry.
1. If the OUTPUT
On
indicator is lit, disable the DC205 OUTPUT
by pressing the [On
/
O
ff
] button.
2. Connect a pair of banana test leads from the red and black
SENSE terminals on the DC205 to the input HI, LOW terminals
on the multimeter.
3. Connect a second pair of banana test leads from the red and
black OUTPUT terminals on the DC205, connecting the other
end of these test leads to the back of the corresponding stack-
able sockets on the banana leads at the multimeter. Be sure to
connect HI to HI, and LOW to LOW.
4. Plug the banana-to-BNC adapter into the back banana leads at
the multimeter. Be sure to align the Ground tab of the adapter
with the LOW side banana leads.
5. If not already so configured, press the [Range] button repeat-
edly until the
±
1 V
range is selected. Press [Float
/
Ground] to
select
Ground
, and press [2 or 4 Wire] to select
2-wire
.
6. Press [1] and [Enter
/
Start] to program the setting to 1.000 000 V.
Press [On
/
O
ff
] to enable the output. Verify the multimeter
displays a voltage very close to 1.000 000 V.
7. Use the SELECT
/
ADJUST buttons or the
knob to adjust the
DC205 until the multimeter displays exactly 1.000 000 V, with a
minimum of 100
μ
V resolution.
8. Attach the 50
Ω
BNC terminator to the banana-to-BNC adaptor.
Verify that the multimeter display drops by at least one or two
millivolts (the actual drop will depend on the length and wire
gauge of your banana test leads).
9. Now, press the [2 or 4 Wire] button. Verify that the
4-Wire
indicator and the
SENSE
indicator both become illuminated.
10. The multimeter should again be displaying exactly 1.000 000 V,
with a minimum of 100
μ
V resolution.
DC205 Precision DC Voltage Source
