Agilent Technologies 4284A, Operation Manual

Page: 356 / 460

DC Bias (1.5 V/2 V)
Output Curren t: 20 mA max.
Option 001 (P o w er
Amp/DC Bias)
DC Bias V oltage
DC Bias v oltage applied to DUT ( V
dut
) is given as,
V
dut
= V
b
0 100 2 I
b
[ V ]
Where, V
b
is DC bias setting v oltage [V],
I
b
is DC bias curren t [A].
DC Bias Current
DC bias curren t applied to DUT ( I
dut
) is given as,
I
dut
=
V
b
100 + R
dc
[ A]
Where, V
b
is DC bias setting v oltage [V],
R
dc
is the DUT's DC resistance [].
Maximum DC bias curren t when the normal measuremen t can b e
p erformed is as follo ws.
Measuremen t
Range
10 100 300 1 k 3 k 10 k 30 k 100 k
Bias Curren t
Isolation
On 100 mA
O 2 mA 2 mA 2 mA 1 mA 300 A 100 A 30 A 10 A
Relativ e Measurement Accuracy with Bias Current Isolation
When the bias curren t isolation function is set to ON, add the
display uctuation (N) given in the follo wing equation to the Ae
of relativ e measuremen t accuracy (Refer to \relative measuremen t
accuracy" of sp ecication).
The following equation is sp ecied when all of the follo wing
conditions are satised.
DUT imp edance 100
T est signal lev el setting 1 V
rms
DC bias curren t 1 mA
In tegration time : MEDIUM
N = P 2
DUT
imp edance
[]
Measuremen t Range []
2
DC
bias current
[mA]
T est signal lev el [V
rms
]
2
1
p
n
2 10
04
[%]
Where, P is the co ecien t listed on T able A,
n is the n um b er of a v eraging.
9-24 General Information