Dc Bias - Keysight E4980A User Manual

Display Format
MEAS DISPLAY Page

DC Bias

The E4980A/AL has an internal DC bias. A DC bias is output when the DC Bias
key on the front panel is set to ON.
The DC Bias key is a toggle-type switch used to enable DC bias output. When
you press the DC Bias key, DCBIAS appears in the status display area and the
LED indicator for DC bias is ON (orange). When you press the DC Bias key
again, DCBIAS disappears from the status display area and the LED indicator is
OFF. If the DC Bias key is set to OFF, the setting value for the DC bias is not
output even though the DC bias is set to ON in the BIAS field.
The setting value of the DC bias signal voltage is the value set when the
measurement contacts (UNKNOWN terminals) are opened.
The setting value of the DC bias signal current is the value set when the
measurement contacts (UNKNOWN terminals) are shorted.
The range of the DC bias has two types: AUTO and FIX. When the E4980A/AL is
initiated or preset, AUTO is set. The following descriptions are effective when
AUTO is set as a range. Use the SCPI command to fix the range. For details,
refer to
DC bias (Standard)
When option 001 (power/DC bias enhance) is not installed, the DC bias can be
set with a resolution listed in
cannot be set without option 001 present.
Table 3-16 DC bias and resolution (Std.)
DC bias signal vol tage
0 V, 1.5 V, 2.0 V
DC bias and resolution (Option 001)
When option 001 (power/DC bias enhance) is installed, the DC bias signal
voltage and signal current can be set with a resolution listed in
Table
Table 3-17 DC bias and resolution (Option 001)
DC bias signal vol tage level
 (0 V to 5 V)
 (5 V to 10 V)
 (10 V to 20 V)
 (20 V to 40 V)
64
":BIAS:RANGe:AUTO" on page
3-18.
1. Effective resolution is 330 V.
323.
Table 3-16. The level of the DC bias signal current
DC bias signal current
unavailable
Resolution
1
100 V
1 mV
2 mV
5 mV
Keysight E4980A/AL Precision LCR Meter
Table 3-17 or