Patton electronic 2130 - Manual (Page 10)

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4.2 POWER CONNECTION
The Model 2124/2130 offers either an AC or DC power supply.
The 2124/2130 provides a strap selectable power supply.
AC Power Supply (100-240VAC)
The Model 2124/2130 uses a 5VDC, 2A universal input 100-240VAC,
power supply (center pin is +5V). The universal input power supply is
equipped with a male IEC-320 connector. This power supply connects to
the Model 2124/2130 via a barrel jack on the rear panel. A variety of
international power cords are available for the universal power supply.
The Model 2124/2130 powers up as soon as it is plugged into an AC out-
let. The unit does not have a power switch.
The 2124/2130 is factory set to be used with the AC power supply.
Note Default setting has strap on position 7 and 8 on J3 for AC power
supply. See Figure 4 below.