Series 2600 System SourceMeters Reference Manual
Source-Measure Concepts
8-7
Return to
2600S-901-01 Rev. A / May 2006
General SourceMeter power equation
V
OA
V
P
–
(
)
I
P
( )
DC
MAX
V
OA
V
B
–
(
)
I
B
( )
P
CS
T
DER
–
(
)
≤
+
P
CS
=
The maximum power generated in a SourceMeter channel that can be
properly dissipated by the SourceMeter cooling system.
T
AMB
=
The ambient temperature of the SourceMeter operating environment.
T
DER
= T
AMB
- 30
• This factor represents the number of watts the SourceMeter is de-
rated when operating in environments above 30
°
C. This is
represented as a temperature because the maximum output power
of each SourceMeter channel is reduced by 1W per degree C
above 30
°
C.
• T
DER
is 0 when the ambient temperature is below 30
°
C.
V
OA
=
The SourceMeter output amplifier voltage. This constant can be found
in the tables below.
V
P
=
The voltage level the SourceMeter is attempting to force while at the
pulse level.
• When operating in quadrants 1 or 3 (sourcing power), the sign of
this voltage must be
positive
when used in the power equations.
• When operating in quadrants 2 or 4 (sinking power), the sign of this
voltage must be
negative
when used in the power equations.
V
B
=
The voltage level the SourceMeter is attempting to force while at the
bias level.
• When operating in quadrants 1 or 3 (sourcing power), the sign of
this voltage must be
positive
when used in the power equations.
• When operating in quadrants 2 or 4 (sinking power), the sign of this
voltage must be
negative
when used in the power equations.
I
P
=
The current flowing through the SourceMeter channel while at the pulse
level.
I
B
=
The current flowing through the SourceMeter channel while at the bias
level.
Summary of Contents for SourceMeter 2600 Series
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