Total Access 1500 Single 4-Wire ETO Access Module ... - Adtran
Total Access 1500 Single 4-Wire ETO Access Module ... - Adtran
Total Access 1500 Single 4-Wire ETO Access Module ... - Adtran
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4. PROVISIONING<br />
There are no hardware options in the 4W <strong>ETO</strong> access<br />
module; its specific options can be provisioned from the<br />
SCU ADMIN port or remote craft interface. The factory<br />
default settings for the 4W <strong>ETO</strong> access module are<br />
noted in bold text in Table 4 and Table 5.<br />
Table 4. 4W <strong>ETO</strong> General Options<br />
Function Option Description<br />
Transmit TLP –18.0 to +7.5 dBm (+0.0) Sets the transmit channel attenuation in 0.1 dBm increments<br />
from the customer to the network.<br />
Receive TLP:<br />
150 and 600 ohms<br />
1200 ohms<br />
Sealing Current Mode None<br />
Sink<br />
Source<br />
Tx Termination (1) 150 ohms<br />
600 ohms<br />
1200 ohms<br />
Rx Termination (1) 150 ohms<br />
600 ohms<br />
1200 ohms<br />
Equalizer Options Height<br />
Bandwidth<br />
Slope<br />
Cable Type<br />
–18.0 to +7.5 dBm (+0.0)<br />
–20.0 to +5.5 dBm (+0.0)<br />
Sets the receive channel attenuation, in 0.1 dBm increments<br />
from the network to the customer.<br />
Sets the sealing current mode of operation.<br />
Selects the impedance of the Transmit T/R pair from the<br />
customer toward the T1 network.<br />
Selects the impedance of the T1/R1 pair toward the customer.<br />
See Table 5 for detailed descriptions of the equalizer<br />
provisioning options.<br />
Note: Defaults are in bold type.<br />
(1) Although no restrictions are placed on the termination settings relative to the equalizer settings, the following configurations<br />
are typical: 600 ohms and 1200 ohms impedances can be used in conjunction with active equalization.<br />
The 150 ohms and 600 ohms impedances can be used with mismatched equalization. The 600 ohms impedance can<br />
also be used on short nonloaded loops where no equalization is necessary.<br />
Table 5. 4W <strong>ETO</strong> Equalizer Options<br />
Function Option Description<br />
Height 0 to 15 In conjunction with Bandwidth Equalization, corrects for<br />
frequency response degradation at the high end of the voice<br />
range due to cable length by increasing the 3250-Hz equalization<br />
bump.<br />
Bandwidth 0 to 15 In conjunction with Height Equalization, corrects for frequency<br />
response degradation at the high end of the voice range due to<br />
cable length by increasing the breadth of the equalization bump.<br />
Slope 0 to 15 Corrects for frequency response degradation at the low end of<br />
the voice range due to cable length.<br />
Cable Type Non-Loaded<br />
Loaded<br />
Used to specify loaded or nonloaded cable. This option modifies<br />
the equalization circuitry to provide greater gain at the higher<br />
frequencies when transmitting over nonloaded cable.<br />
61180113L2-5A Issue 1, October 2003 5