User's Manual

AT7120 Owner Manual Rev. 1.1 – March 2009 45/76
MODULE 4401 – Technical Specifications
FEATURE
SPECIFICATION
INPUT AC VOLTAGE
90 TO 140VAC / 180 TO 250VAC
SWITCHING FREQUENCY
50kHz
LINE REGULATION
BETTER THAN 2% FOR ALL
OUTPUTS
OUTPUTS NOMINAL VOLTAGES
AND CURRENTS
+32V / 10A
+18V / 1A
-18V / 1A
+9V / 1A
RIPPLE
300mV (+32V)
120mV (+18V / +9V)
80mV (-18V)
LOAD REGULATION
BETTER THAN 2% FOR +32V
BETTER THAN 25% FOR +18V,
-18V, +9V
EFFICIENCY
BETTER THAN 80%
OUTPUT OVER CURRENT LIMIT
30% UPPER NOMINAL VALUE
RESTART VOLTAGE
HIGH LEVEL: > 3.5 TO 5Vdc
LOW LEVEL: < 3.3Vdc
SHUTDOWN VOLTAGE
HIGH LEVEL: > 0.7 TO 5Vdc
LOW LEVEL: < 0.7Vdc
POWER SUPPLY
CIRCUIT
CIM
CIP
POWER
3388A
8111A
MODULE 4401 – Changing the Mains Voltage Operation
The module 4401, on its rear side, is built in such way that it is possible to access the 110/220Vac
switching voltage jump. The pictures below illustrate the jump position for each desired operational
voltage. This is the only required maneuver to change the voltage operation on the AT7120 unit.