Ultratec TDD Detector Especificações descarregar pdf (Página 21)

7. Press the Send (Red) Button and the Send LED will turn on. You

have now tested the rack for correct wiring of the power supply and

Auto/Manual mode selection.

8. Disconnect the power supply from the 115VAC source.

9. Connect the telephone lines to the 2 Micro-ribbon Male connectors

as indicated in the schematic diagram at the back of this manual

which shows the connectors on the back of the TDD Detector Rack

Enclosure.

Manual Connection - Connect only Tip# and Ring#. No other

connections are necessary.

Automatic Switch Connection - Connect the Tip#, Ring#, OH# and

the Ground as indicated on the diagram. TipL# and RingL# are not

to be connected. The OH# and its GND connection are the

connections to the open switch element indicating when the

telephone line is Off/On hook. These connections should go only to

the switch element. The OH# connection is internally biased on the

TDD Detector card so no outside power connections are required.

Automatic Loop Current Detection - In this mode the TDD

Detector card is placed in series ahead of the operator so that loop

current detection is accomplished. This requires 4 telephone line

connections to be made. Connect Tip# and Ring# as indicated. The

connections to the operator's equipment then come from the TipL#

and RingL# connections as shown on the diagram. Jumper J3 on the

TDD Detector card must be changed to the top position.

Note: The TDD Detector cards do not draw loop current. Therefore

loop current must be drawn by the operator's equipment for this

feature to operate (10mA. min).

10. Plug the 2 Micro-ribbon connectors into the back of TDD Detector

Rack Enclosure. Please note that Connector #1 is for lines 1-7 and

Connector #2 is for lines 8-15. Re-connect the 115 VAC power source

to the 12VDC power supply and press the Reset (Black) button on

Card #1 in the TDD Detector Rack Enclosure.

11. Perform the TDD Detector Installation Test (see below) for Card #1.

12. Disconnect the 115 VAC power source. Install the remaining TDD

Detector cards in the TDD Detector Rack Enclosure. Reinstall the

restraining bar using the 2 wing screws provided.

13. Re-connect the 115 VAC power source and press the Reset (Black)

button on each TDD Detector card. Test each line using the TDD

Detector Installation Test procedure given below.

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Ultratec TDD Detector Especificações Página 21