Chapter 4 Tools
Utilities
WCDMA Options Version 6.20
123
The Supply entry field can be used to select a supply voltage in the range 0 to
approximately 11 V DC, in steps of 0.05 V (i.e. 50 mV). The option is specified from
0 to 10 V; higher voltages may or may not be achievable.
A status field next to the supply voltage entry field indicates the current status
of the power supply, i.e. either ON or OFF. A softkey is available to turn the ‘supply
on’ or ‘supply off’, respectively.
Current Measurement Option If installed, this option displays the current drawn from the simulated battery.
The menu can show the measurement results in two different modes: a numer-
ical-only display and a combined graphical and numerical display. In both cases,
the lower results section is the same, indicating a statistical representation of
the results for measured power, average and peak current.
The upper results section varies depending on the selected display mode; the
mode can be selected with a softkey.
– In numerical-only mode, the upper results section shows the numerical
results for power and current from the latest measurement.
– In graphical mode, the upper results section displays the shape of the
current over time for one TDMA frame.
NOTE
For safety reasons, the supply voltage is always off at power-on. So the power
supply has to be switched on when required.
NOTE
If the power supply is short-circuited, the supply voltage and current goes
down. When the short circuit is removed again, the voltage will come back
after a few seconds (PTC resistor).
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