Keithley 6482 - Ground Connect Mode

3-6 Return to Section Topics 6482-901-01 Rev. A / August 2012
Section 3: Basic Operation Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual
2. Select AUTO-DELAY from the displayed choices, and then press the ENTER key.
3. Select ENABLE or DISABLE as appropriate, and then press the ENTER key.
Remote command source delay
Use the appropriate command shown in Table 3-4 to program the source delay over a remote
interface. See Section 16 for details. For example, the following command sets the source delay to
50 ms:
:SOUR1:DEL 0.05
Ground connect mode
The VOLTAGE SOURCE output jack for either channel can be left floating or connected to chassis
ground by selecting the appropriate ground connect mode. When ground connect is enabled, the
VOLTAGE SOURCE terminal will be connected to chassis ground, as shown in Figure 3-3. This
configuration allows you to bias and measure the device under test (DUT) using a single triaxial
cable as shown. When ground connect is disabled (Figure 3-4), you must make separate
SOURCE OUTPUT connections to the DUT. See Section 2 for connection details.
NOTE The ground connect mode can be individually controlled for each channel.
Front panel ground connect
Enable or disable the ground connect mode as follows:
1. Press the CONFIG key, and then press the SRC1 or SRC2 key.
2. Select GND-CONNECT, and then press the ENTER key.
3. Choose ENABLE or DISABLE as appropriate, and then press the ENTER key.
Remote command ground connect
Use the appropriate command shown in Table 3-5 to program the ground connect mode over a
remote interface (see Section 16 for details). For example, the following command enables ground
connect on channel 1:
:SOUR1:GCON ON
Table 3-4
Source delay commands
Command Description
:SOURce[1]:DELay <Delay>
:SOURce[1]:DELay:AUTO <State>
:SOURce2:DELay <Delay>
:SOURce2:DELay:AUTO <State>
Set source delay.
Enable or disable autodelay (ON or OFF).
Set source delay.
Enable or disable autodelay (ON or OFF).
Table 3-5
Ground connect commands
Command Description
:SOURce[1]:GCONnect <State>
:SOURce2:GCONnect <State>
Enable or disable channel 1 ground connect (ON or OFF).
Enable or disable channel 2 ground connect (ON or OFF).