10
DC Power Supply Models AX501, AX502 and AX503
2.3.4 “TRACKING” Switch
(Models AX502 and AX503)
• “TRACKING” Mode
- This control enables two “0 to 30V” sources to be controlled in
series mode.
- When the “TRACKING” button is switched to ON, it sets up a
series connection between the “–” terminal of the MASTER
power supply and the “+” terminal of the SLAVE power supply.
The external terminals are used to connect the points in the
circuit to be powered.
- Only the voltage settings of the MASTER module cause the
voltages of the MASTER and SLAVE to vary proportionally.
• “TRACKING” LED
- When this LED is on, the “TRACKING” function has been acti
-
vated.
2.3.5 Setting “TRACKING”
The SLAVE tracks as a % of the MASTER output. You need to set this %
before turning on the Tracking.
To set-up the Tracking, first set the MASTER voltage output, then set the
SLAVE output %. To set this %, simply adjust the SLAVE output voltage.
NOTE:
Think of the SLAVE display as a % (10.0 = 100%, 5.0 = 50%,
20.0 = 200%). Once the SLAVE % is set, switching the Tracking ON
will cause the SLAVE to track the MASTER at the inputted %.
Example:
We want the SLAVE to Track the MASTER @ 30% of the MASTER output
voltage, and we want to Track starting @ 10.0V out of the MASTER.
• Make sure the Tracking is OFF
• Set the MASTER Voltage to 10.0V
• Set the SLAVE to 30% (3.0V)
• Turn the Tracking switch to ON
• The MASTER will display 10.0V and the SLAVE will display 3.0V
• As the MASTER is increased or decreased, the SLAVE will track
@ 30%
• During Tracking, the SLAVE LED displays the actual SLAVE
output voltage
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