Patton electronic 2702 G.703 user manual Power Connection, Using the AC Power Supply 100-240VAC

4.3 POWER CONNECTION

The Model 2702 offers three ways to supply external power: AC power, DC power and interface power.

4.3.1 Using the AC Power Supply (100-240VAC)

The Model 2702 uses a 5VDC, 400mA universal input 100- 240VAC, power supply (center pin is +5V). The universal input power supply is equipped with a male IEC-320 power entry connector. This power supply connects to the Model 2702 by means of a barrel jack on the rear panel. There are a variety of international power cords avail- able for the universal power supply. The Model 2702 powers up as soon as it is plugged into an AC outlet–there is no power switch.

4.3.2 Supplying DC Power

The 36-60 VDC DC to DC adapter is supplied with the DC version of the Model 2702. The black and red leads plug into a DC source (nominal 48VDC) and the barrel power connector plugs into the barrel power supply jack on the 2702.

5.0 OPERATION

Once the Model 2702 is installed and configured properly it is ready to place into operation. This section describes the function of the LED indicators, and the use of the loopback.

5.1 LED DESCRIPTIONS

The Model 2702 is equipped with seven LED indicators that moni- tor the status of communication. Figure 4 (below) shows the location of the LEDs on the Model 2702 front panel.

TXD	G.
RXD	703Interface	Model
LOS

To Power

Supply Jack

Barrel power connector

MADEINCHINABYSUNNY	:G01234567890S/N	OUTPUTPOWER:5WMAX	OUTPUT:+5V1.0A	INPUT:36-60V0.2AMAX	MODEL:SYD1106-0505	SWITCHINGPOWERSUPPLY		To -48VDC
							-Vin	Source
							+Vin

Black lead (-V)

Red lead (+V)

ALM		2702
ERR	Converter
T/L
PWR

4.3.3 Supplying Power via pin KK

You may also supply DC power directly to pin KK of the V.35 inter- face. DC Power supplied to pin KK must be regulated 5VDC ± 5%, 300mA minimum.

NOTE: Model 2702 is factory configured to accept power from the enclosed DC wall adapter (See Sections 4.3.1 and 4.3.2 above). If you wish to supply power via pin KK on the interface, you must change the setting of the power supply jumper on the printed cir- cuit board See Appendix E. All power sources must be SELV (Circuit, Safety Extra Low Voltage) specified. (See CENELEC EN60950, Section 1.2.8.5)

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	Figure 4. Top of Model 2702, Showing LED Indicators
TXD	When the unit sends a one, the TXD LED
	is turned on. When it sends a zero, the
	TXD LED is turned off. Moreover, the TXD
	LED is active only in active DS0 channels.
	In inactive channels, the TXD LED is off.
RXD	When the unit receives a one, the RXD
	LED is turned on. When it receives a zero,
	the RXD LED is turned off. Moreover, the
	RXD LED is active only in active DS0 chan-
	nels. In inactive channels, the RXD LED is
	off.
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