Keithley 2302 Instruction Manual page 325

Using this value for the output impedance setting in the battery channel the voltage drop
across the output terminals, as shown in
within 3%, with the results obtained with the battery included with the handset.
Figure E-7
Model 2306 voltage drop during the transmit portion of the pulse
NOTE
Figure E-7
GSM phone with the Model 2306 battery channel, output impedance set to 0.24Ω.
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Figure
contains the voltage drop during the transmit portion of the pulse of a
Applications Guide
E-7, is 0.360V. This value is in agreement, to
V H – V L = 0.360V
E-7