M800-00
T807/808 Initial Set-up & Adjustment
B4.5
Copyright TEL
31/08/96
4.3.2
Output Voltage Adjustment
Remove the right cover.
Switch the T807/808 on.
Adjust the "V/OUT SET" trim control (RV92) to produce the required output volt-
age, observing the limits given in Section 1.2.4.
Note:
Connection of the remote sense terminals after the output voltage has
been set will result in a slight change in the nominal output voltage (by
approx. 0.3V). The remote sense option should be fitted before setting the
output voltage (refer to Section 7.6).
4.3.3
Current Limit Adjustment
Turn the "CURRENT LIMIT SET" control (RV25) fully clockwise.
Switch the T807/808 on and set the variable DC load for a current just above the
maximum desired current (observing the limits in Section 1.2.4).
Adjust RV25 until the voltage across the DC load just starts to drop.
4.3.4
Overvoltage Cut-out Adjustment (Issues 05 & 07 Only)
Set the mains input voltage to 240V (nominal) with a 15A (T807) or 25A (T808)
load connected.
Adjust RV92 to give 15V output from the PSU.
Adjust RV81 slowly for power supply cut-out (“On” LED and “Overload” LED
will flash on and off).
Reset RV92 to give 13.8V output from the PSU.
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