User's Manual

CHAPTER 4 ND-70185 (E)
Page 36
Revision 3.0
INSTALLATION
Key Setting on Circuit Cards
SW4D
1
ON Transmission Signal A Logic: Negative
OFF × Transmission Signal A Logic: Positive
2
ON Receiving Signal A Logic: Negative
OFF × Receiving Signal A Logic: Positive
3
ON RMT Alarm Sending: Not to be sent out
OFF × RMT Alarm Sending: To be sent out
4
ON ×
Simultaneous Seizure Supervision: Not to be
controlled
OFF
Simultaneous Seizure Supervision: To be con-
trolled
5
ON Data Link Control: MOS
OFF × Data Link Control: BOS
6
ON Multiframe Selection: 12-Multiframe
OFF Multiframe Selection: 24-Multiframe
7
ON
Signal Selection: AMI (Alternate Mark Inver-
sion)
OFF
Signal Selection: B8ZS (Bipolar with 8 Zeros
Substitution)
8ON × Fixed
SW25
1
ON × Impedance setting: 100 Ω
OFF Impedance setting: 110 Ω
2
ON
Transformer at Middle Point – Transmission:
Ground
OFF ×
Transformer at Middle Point – Transmission:
Open
3
ON Transformer at Middle Point Receive: Ground
OFF × Transformer at Middle Point Receive: Open
4
ON Idle Code: To be sent out
OFF × Idle Code: Not to be sent out
Table 4-4 Switch Setting Patterns for the DTI Card (Continued)
SWITCH NAME
SWITCH
NUMBER
SETTING
STANDARD
SETTING
MEANING
1
2
3
4
5
6
7
8
OFF
1
2
3
4
OFF