Chapter 2 Quick Start
To use the power supply in track mode
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To use the power supply in track mode
The ±25V supplies provide 0 to ±25 V tracking outputs. In the track mode, two
voltages of the ±25V supplies track each other to within ±(0.2% of output + 20 mV)
for convenience in varying the symmetrical voltages needed by operational amplifiers
and other circuits using balanced positive and negative inputs.
To operate the power supply in the track mode, proceed as follows:
1 Set the +25V supply to the desired voltage as described in previous section "To
use the power supply in constant voltage mode" (see page 31 for detailed
information).
2 Enable the track mode.
The key must be depressed for at least 1 second to enable the track mode.
When the track mode is first enabled, the -25V supply will be set to the same voltage
level as the +25V supply. Once enabled, any change of the voltage level in either the
+25V supply or the -25V supply will be reflected in other supply. The current limit
is independently set for each of the +25V or the -25V supply and is not affected by
the track mode.
3 Verify that ±25V supplies track each other properly.
You can verify that the voltage of the -25V supply tracks that of the +25V supply
within ±(0.2% of output + 20 mV) from the front-panel display by comparing the
voltage values of the +25V supply and the -25V supply.
In the track mode, if the CC annunciator is lit when the display is selected for the
+25V supply, choose a higher current limit for the +25V supply. If the CC
annunciator is lit when the display is selected for the
-25V supply, choose a higher current limit for the -25V supply.
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