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Basic Power Supply Operation 2-13

NOTE Refer to the Programming syntax paragraph of Section 6 for a description of

parameters (e.g., <b>, <NRf>, etc.).

Command notes (outputting voltage and current)

SENSe[1]:CURRent:RANGe <n> Applies to battery channel (#1)

SENSe2:CURRent:RANGe <n> Applies to charger channel (#2)

After specifying a current value, the instrument will go to the most sensitive range to

acc

ommodate that reading. For example, if you are expecting a maximum current

reading of 750mA, you can let <n> = 0.75 (or 750e-3) to select the 5A range. Using the

:RANGe command to manually select a current range disables auto range. Another way

to select a range is to use the MINimum, MAXimum, and DEFault parameters as follows:

SENS:CURR:RANG MIN Select the low current range (5mA) for battery

channel (#1).

SENS2:CURR:RANG MAX Select the high current range (5A) for charger

channel (#2).

SENS2:CURR:RANG DEF Select the default current range for charger channel

(#2).

The response for :RANGe? query returns the selected range value which is either 5.0000

or 0.0050.

SENSe[1]:CURRent:RANGe:AUTO <b> Applies to battery channel (#1)

SENSe2:CURRent:RANGe:AUTO <b> Applies to charger channel (#2)

This command is coupled to the :RANGe <n> command. When auto range is enabled,

the response

for :RANGe? query returns the selected range value which is either 5.0000

or 0.0050. If you then disable auto range, the instrument will remain at the last selected

range.

[SOURce1]:VOLTage <n> Applies to battery channel (#1)

SOURce2:VOLTage <n> Applies to charger channel (#2)

This command sets voltage amplitude in volts: 0 to 15 (1mV resolution).

[SOURce1]:CURRent <n> Applies to battery channel (#1)

SOURce2:CURRent <n> Applies to charger channel (#2)

• With the 5mA measurement range selected, the maximum current limit is 1A.

• Sending a value that exceeds 1A is rejected, and the following message is displayed

briefly:

CURRENT LIMIT ON

mA RANGE ≤ 1A

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Keithley 2306 User Manual

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