5-12
Delta, Pulse Delta, and Differential Conductance
Model 6220/6221 User’s Manual
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The default units for the Model 622x is volts. With Ohms (
Ω
) units or Siemens (S)
units selected, a reading is calculated as follows:
Ω
= V/I
S = I/V
Where: V is the Delta, Pulse Delta, or Differential Conductance voltage reading.
I is the current sourced by the Model 622x.
With Power units selected, power is calculated as follows:
1.
See Section 5 of the Reference Manual for details on “Peak power and
Average power” for Pulse Delta.
2.
See Section 5 of the Reference Manual for details on “Average Voltage and
Power” for Differential Conductance.
Setting measurement units
From the front panel, units can be set as follows:
1.
Press the
UNITS
key to display the READING UNITS menu.
2.
Use the “
) to select the desired
measurement units (
VOLTS
,
OHMS
,
WATTS,
or
SIEMENS
).
3.
Model 6221 only – After selecting
WATTS
, you will be prompted to select
the POWER TYPE.
4.
Select the desired power type (
AVERAGE
or
PEAK
).
Remote programming
– Commands for setting units are listed in
.
Example
– Selects power (W) measurement units for the Model 622x:
UNIT W
Delta
Pulse Delta
1
Differential Conductance
2
W = I x V
W
PEAK
= I x V
W = I
AVG
x V
AVG
W
AVG
= I x V x Duty Cycle
Table 5-1
Measurement unit commands
Command
Description
Default
UNIT[:VOLT][:DC] <name>
Specify reading units*.
<name> = V, OHMS, W, or SIEMens
V
UNIT:POWer[:TYPE] <name>
Set power units reading type for 6221
Pulse Delta.
<name> = AVERage or PEAK
PEAK
UNIT:POWer[:TYPE]?
Query power units reading type
* The <name> parameter for Siemens can be sent as S, SIEM, or SIEMENS.
Summary of Contents for 6220 DC
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Page 36: ...1 20 Getting Started Model 6220 6221 User s Manual Return to Section 1 topics...
Page 131: ...6 10 Averaging Filter Math and Buffer Model 6220 6221 User s Manual Return to Section 6 topics...
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