Digital Pad Setting; Table 4-5 Digital Pad Setting - NEC NEAX 2400 IPX Manual

Table 4-4 Switch Setting Patterns for the DTI Card (Continued)
SWITCH NAME
SW5D
1 2 3 4
OFF
This switch setting is applicable for a system that adopts Associated Channel Interoffice Signalling (ACIS).
Note:

2.4 Digital PAD Setting

The PA-24DTR card is equipped with a mask ROM in which the following typical PAD patterns have been
already written. PAD value is determined with the selection of a desired PAD pattern, which can be done
by key setting of the SW 58 (elements 4, 5, 6) on the card, and programming of the PAD data by the ARTD
command - CDN = 30 (PAD). Refer to
PAD
DATA
ARTD
PAD Pattern 1 PAD Pattern 2
CDN=
30
SEND RECEIVE SEND RECEIVE
2 2
1
Note
4 4
2
6 6
3
8 8
4
Key setting of SW 39-3,4 correspond to PAD values. (Regardless of PAD patterns)
5
7 0 0
Stands for 3[dB] GAIN.
Note:
SWITCH
SETTING
NUMBER
ON
1
OFF
ON
2
OFF
ON
3
OFF
4 ON
Table 4-5

Table 4-5 Digital Pad Setting

PAD Pattern [dB] (Selected by key setting)
A→µ Loss
(Bothway)
SEND
-3
3 0
3 3 4
0 6 6
3 9 8
0 0 Through Through Through Through Through Through Through Through
STANDARD
SETTING
Digital PAD ROM selection: Special
specification
Digital PAD ROM selection: Standard
×
specification
×
LAYER2 signal logic: Positive
LAYER2 signal logic: Negative
Line fault is not notified to the upper CPU
×
Line fault is notified to the upper CPU
Zero Code Suppression is not provided
for the PAD patterns and ARTD data.
A→µ Loss
(Receive)
RECEIVE SEND RECEIVE
0 0 0
4 0 4
6 0 12
8 0 8
NDA-24299
INSTALLATION
Key Setting on Circuit Cards
MEANING
µ→A Loss µ→A Loss
(Bothway) (Receive)
SEND RECEIVE SEND
0 0 0
4 4 0
6 6 0
8 8 0
CHAPTER 4
Revision 1.0
RECEIVE
0
4
12
8
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