KEPCO ATE-DMG SERIES - Manual (Page 30)

2-6 ATE-DMG 042314
2.4 COOLING
The power transistors and rectifiers in the ATE power supplies are maintained within their oper-
ating temperature range by means of special heat sink assemblies, cooled by internal fans.
SIDE PANEL OPENINGS AND THE TOP OF THE CASE MUST BE KEPT CLEAR FROM
OBSTRUCTIONS TO INSURE PROPER AIR CIRCULATION. Periodic cleaning of the interior
of the power supply is recommended. If the power supply is rack mounted, or installed into con-
fined spaces, care must be taken that the ambient temperature (the temperature immediately
surrounding the power supply) does not rise above the limit specified (refer to Table 1-2).
2.5 PRELIMINARY OPERATIONAL CHECK
A simple operational check after unpacking and before equipment installation is advisable to
ascertain whether the power supply has suffered damage resulting from shipping.
Refer to Figures 2-1 and 2-2 for location of operating controls and electrical connections. Tables
2-1 and 3-1 explain the functions of operating controls/indicators and keypad keys, respectively.
1. With POWER switch set to off position, connect the power supply to source power.
2. With no load connected, set POWER switch to the ON position. Each time the unit is turned
on an internal self-test is performed. If the test is successful the indications of step 3 are vis-
ible.
3. The alphanumeric display (LCD) indicates the model and GPIB address. After approximately
2 seconds, the display changes to: the power on default values: Local mode, Constant Volt-
age (CV) mode, 0.000V, 0.000A, output disabled, command entry status (see Figure 2-5).
Overcurrent and Overvoltage protection are set to the maximum values (see Table 1-4), but
are not displayed.
FIGURE 2-5. LCD POWER ON DEFAULTS
NOTE: Six keys with dual functions are labeled with both a command and a number. The com-
mand label is referred to when the unit is in command entry status; the number is
referred to when the unit is in data entry status.
4. Press OUTPUT ON/OFF key to enable the output.
5. Connect a digital voltmeter (DVM) to the (+) and (–) terminals at the rear panel and verify
DVM reads 0V.
6. Press VSET key. Verify bottom line of LCD reads Vset nn (where nn = voltage setting).
Loc CV
0.000A 0.000V
NOTE: indicates blinking colon (:), Command Entry status
indicates blinking equal sign (=), Data Entry status