Assessments - 2, GPA: 4.5 ( )

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The options available are NONE, 50, and 100. See Powering TEs from the NT1 ACE on page 6 for more information concerning Local Bus configurations. The switch labeled CONFIGURATION has two possible options. When set in the LONG position, the Local Bus is configured for Extended Passive Bus. When set in the SHORT position, the Local Bus is configured for Short Passive Bus. Configuration and switch settings are discussed in Short Passive Bus Configuration on page 9 and in Extended Passive Bus Configuration on page 10. The Power Supply provides up to 10 watts of power for the NT1 ACE and the TE. Table 2 gives pin assignments. Table 2. Network Connector Pin Assignments Pin Description 1 No connection 2 No connection 3 No connection 4 U-interface network connection 5 U-interface network connection 6 No connection 7 Negative power input 8 Positive power input 61 203019L1-1 NT1 ACE User Manual 5 NT1 ACE User Manual Powering TEs from the NT1 ACE The ADTRAN NT1 ACE can be used to provide power for TEs connected to the local interface. The NT1 ACE, part number 1203019L1, supplies power by a separate wire pair (PS2) on the two data jacks marked LOCAL, as shown in Figure 2 on page 1. The ADTRAN NT1 ACE International, part number 1203019L3, also incorporates power source 1 (PS1) which provides power over the transmit and receive pairs. Table 3 lists Local Bus connector pin assignments. Before attempting to power any TE from the NT1 ACE, verify that it can accept power from a PS1 or PS2 power source. Table 3. Local Bus Connector Pin Assignments Pin Description 1 No connection 2 No connection 3 S/T interface Receive Power Source 1 (Positive) 4 S/T interface Transmit Power Source 1 (Negative) 5 S/T interface Transmit Power Source 1 (Negative) 6 S/T interface Receive Power Source 1 (Positive) 7 Power Source 1 (Negative) 8 Power Source 2 (Positive) Powering with the NT1 Power Supply The ADTRAN NT1 Power Supply, part number 336048VUR- 2, provides up to 10 watts of power at -48 VDC. The NT1 ACE requires 1.1 watts, leaving approximately 8.9 watts to power the TE(s). Before connecting any TE to be 6 NT1 ACE User Manual 6120301 9L1-1 NT1 ACE User Manual powered from the NT1, verify that the total power requirement of the connected TE is less than 8.9 watts. To connect the NT1 ACE to the NT1 Power Supply, perform the following steps as illustrated in Figure 4. 1. Connect the Power Supply to the NT1 ACE at the POWER jack located on the NT1 ACE. 2. Plug the Power Supply into the nearest wall outlet supplying 110 VAC, 60 HZ. 3. On the NT1 ACE, verify that the POWER and ERROR indicators are illuminated. After approximately 15 seconds, the READY indicator should flash at a 1 Hz rate. Should any of the indicators fail to operate as stated, see the section Troubleshooting on page 11. POWER NETWORK LOCAL Figure 4. Power Supply Connection 61 203019L1-1 NT1 ACE User Manual 7 NT1 ACE User Manual Connecting the Terminal Equipment After successfully powering up the NT1 ACE, the POWER and ERROR indicators should be on and the READY indicator should be flashing. Make sure that terminal equipment (TE) is properly terminated as instructed in Setting the Option Switches on page 4. Plug the TE into one of the Local Bus connectors at the rear of the unit. A second TE may be plugged into the remaining Local Bus connector. If more than two TEs need to be connected to the NT1 ACE, additional connections can be made in parallel to the S/T bus using RJ-45 connectors. .TEs commonly have additional jacks wired in parallel. These may be used to connect more than two TEs as provided for by the NT1 ACE. See the TE documentation for further information. After the TE powers up, the ERROR indicator should go out. There may be some delay between plugging in the TE and the ERROR indicator going out, depending on the specific TE in use. If the ERROR indicator fails to go out, see the section Troubleshooting on page 11. As the ERROR indicator extinguishes, the READY indicator should illuminate. The TE will now be ready to place and receive calls. There may be a slight delay between the appearance of the READY indicator and the TE’s ability to place and receive calls, depending on the specific TE in use. If the READY indicator fails to illuminate or if you are unable to place or receive calls, see the section Troubleshooting on page 11. 8 NT1 ACE User Manual 6120301 9L1-1 NT 1 ACE User Manual Short Passive Bus Configuration This configuration allows you to connect up to eight TEs at any point on the bus. The bus length is limited to 600 feet, as shown in Figure 5. To select the Short Passive Bus configuration, the CONFIGURATION switch must be set to the SHORT position. The bus terminating resistors can be placed at any point along the bus. If the TEs have internal terminating resistors that can be optioned, only one TE’s termination resistor should be enabled. The TERMINATION switch should be placed in the 100 po...

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