GW Instek GPS-x303 Series - Manual (Page 8)

MULTI-OUTPUT POWER SUPPLY
USER MANUAL
10
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
Overload Indicator
CV&CC Indicator
CV&CC Indicator
Overload Indicator
Output Indicator
+ output terminal
- output terminal
+ output terminal
- output terminal
GND terminal
+ output terminal
- output terminal
+ output terminal
- output terminal
: Lights when CH3 output load is larger than rating value
(invalid for GPS-2303).
: The CV light (green light) is on when the CH1 supply is in
the constant voltage operation, or when both the CH1 and
CH2 supplies are in the constant voltage operation in either
series or parallel tracking mode.
: The CC light (red light) is on when the CH1 supply is in the
constant current operation.
: The CV light (green light) is on when the CH2 supply is in
the constant voltage operation.
: The CC light (red light) is on when the CH2 supply is in the
constant current operation or in parallel tracking mode.
: Lights when CH4 output load is larger than rating value
(invalid for GPS-2303&3303).
: Switch the light on.
: Positive polarity output terminal for the CH3 supply (invalid
for GPS-2303).
: Negative polarity output terminal for the CH3 supply (invalid
for GPS-2303).
: Positive polarity output terminal for the CH1 supply.
: Negative polarity output terminal for the CH1 supply.
: Earth and chassis ground.
: Positive polarity output terminal for the CH2 supply.
: Negative polarity output terminal for the CH2 supply.
: Positive polarity output terminal for the CH4 supply (invalid
for GPS-2303&3303).
: Negative polarity output terminal for the CH4 supply (invalid
for GPS-2303&3303).
(28) Output switches : ON/OFF the output.
MULTI-OUTPUT POWER SUPPLY
USER MANUAL
11
(29)
&
(30)
TRACKING
Mode Switch Two push-button switches that select Independent mode, series
tracking mode, or parallel tracking mode as follows:
a. When both switches are disengaged (out), the unit is in the Independent mode
and the CH1 and CH2 power supplies are completely independent from each
other.
b. When the left switch is engaged (in) and the right switch is disengaged (out), the
unit is in the Tracking series mode, maximum voltage of both supplies is set
using the CH1 VOLTAGE controls (voltage at output terminals of the CH2
supply tracks the voltage at the output terminals of the CH1 SUPPLY). Also, in
this mode of operation, the positive terminal (Red) of the CH2 supply is
connected to the negative terminal (Black) of the CH1 supply to allow the two
supplies to be used as a 0 to double rating voltage supply.
c. When both switches are engaged (in), the unit is in the Tracking Parallel mode,
the CH1 and CH2 supplies are wired together in parallel and both the maximum
current and voltage are set using the CH1 controls. The CH1 and CH2 output
can be used as two individual (but tracking) power supplies or just the CH1
output can be used as a 0 to rating voltage supply with a 0 to double rating
current capability.
4-2. Real Panel
(31) Fuse holder
(32) Power socket
(33)
&
AC selects switch : Selects to permit operation from 100, 120, 220 or 230VAC,
50/60Hz line voltage by using (34) HI-LO switch.
(34) HI-LO switch : HI position selects high voltage range (120, 230V AC
inputs), LO position selects low voltage range (100, 220V
AC inputs).
(35) Cooling Fan : Ventilates the hot air out, to prevent output stage from
thermo shock, and improves the temperature coefficient.