NEC Neax 2400 Imx Circuit Card Manual

							CHAPTER 3 ND-70182 (E)
Page 266
Revision 4.0
PA-24LCBV
Line Circuit
PA-24LCBV
Line Circuit
1. General Function 
The PA-24LCBV circuit card provides an interface between a maximum of 24-analog terminals and the
system with a range of 600 (Ohm) inclusive of terminal resistance. This card also can send “Stutter Dial
To n e ,” which is not a continuous tone, to an associated terminal which has no Message Waiting Lamp
(MWL) instead of activating the MWL if required.
Figure 3-62   Location of PA-24LCBV(LC) Card within the System
2. Mounting Location/Condition
The PA-24LCBV(LC) circuit card can be mounted in the following shaded slots.
 
max. 600 [Ω]
Analog TerminalCOT
LCINT SW
CPU GT
Local I/O Bus (PA-24LCBV) C. O. LINE
 Loop Resistance : Max 600[Ω]
  (inclusive of terminal resistance)
 Reverse Function : x 1 circuit
 Stutter Dial Tone
 Message Waiting Lamp
 Encoding Law : µ-law
PUBLIC
NETWORK
PIMMounting Module
00 01 02 03 04 05 06 07 08 09101112 13 14 15 16 17 18 19 20212223 
						

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PA-24LCBV
Line Circuit
3. Face Layout of Lamps, Switches and Connectors
The face layout of lamps, switches on this card is shown in Figure 3-63.
Figure 3-63   Face Layout of PA-24LCBV(LC) Card
OPE2
OPE1
BL23
BL0SW00 (MB)
BL23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
CN
SW18
SW10
(BNW0-7) SW11
(BNW8-15)
SW12
(BNW16-23)
SW17SW13
SW14SW15
SW16 
						

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PA-24LCBV
Line Circuit
4. Lamp Indications
The contents of lamp indications on this card are shown below.
5. Switch Settings
Switches on the PA-24LCBV(LC) card have the following meanings.
LED NAME COLOR LED STATUS DESCRIPTION
OPE1 Green Steady Lighting The circuitry of Circuit #0-#7 is operating normally.
OPE2 Green Steady Lighting The circuitry of Circuit #8-#23 is operating normally.
BL0
~
BL23GreenSteady Lighting Line loop exists.
Flashing1) Ringing signal is being transmitted. Busy LED keeps flashing in 
synchronizing with on/off of the ringing signal.
2) Dial pulses are being received. While dial pulses from a line are 
being received. Busy LED keeps flashing in synchronizing with 
the dial pulses coming from the line.
3) Line is in make-busy state.
Busy LED keeps flashing at 60 ipm.
SWITCH FUNCTION SWITCH SETTING MEANING
SW00
(MB)
Circuit Card 
Make-busy KeyON Circuit card make-busy 
OFFCircuit card make-busy cancel
(normal operating mode)
SW10
(BNW0-7)Balancing Net-
work Designation
 Each element on 
this switch corre-
sponds to Circuit 
#0-#7.ONNorth America, Other Country (A/µ Law)
BNW: Compromise Impedance
 (EIA/TIA-464A)Note 
for long distance.
OFFNorth America, Other Country (A/µ Law)
 BNW: 600 
Ω Note 
 for short distance
1   2   3   4   5   6    7  8ON
OFF 
						

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PA-24LCBV
Line Circuit
SWITCH No. FUNCTION SWITCH SETTING MEANING
SW11
(BNW8-15)Balancing Network 
Designation
Each element on 
this switch corre-
sponds to Circuit 
#8-#15.[the same as previous page]
SW12
(BMW16-23)Balancing Network 
Designation
Each element on 
this switch corre-
sponds to Circuit 
#16-#23.[the same as previous page]
SW13
Selection of the UserSW13
-1SW13
-2SW13
-3SW13
-4
North America 
ON OFF OFF OFF
SW141 OFF Fixed to OFF
2Stutter
Dial ToneON Stutter Dial tone Available
OFF Stutter Dial tone not Available
3 OFF Fixed to OFF
4 OFF Fixed to OFF
1   2   3   4   5   6    7  8ON
OFF
1   2   3   4   5   6    7  8ON
OFF
 1   2   3   4ON
OFF
 1   2   3   4ON
OFF 
						

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PA-24LCBV
Line Circuit
SWITCH No. FUNCTIONSWITCH
SETTINGMEANING
SW15 1 OFF Fixed to OFF
2 OFF Fixed to OFF
3 OFF Fixed to OFF
4 OFF Fixed to OFF
SW16 1 OFF Fixed to OFF
2 OFF Fixed to OFF
3Message Waiting 
LampONMessage Waiting Lamp Flashing 
(Controlled by Firmware)
OFFMessage Waiting Lamp lit or Flashing 
(Selected and Controlled by Software)
4 OFF Fixed to OFF
SW17 1 OFF Fixed to OFF
2 OFF Fixed to OFF
3 OFF Fixed to OFF
4 OFF Fixed to OFF
5 OFF Fixed to OFF
6 OFF Fixed to OFF
7 OFF Fixed to OFF
8 OFF Fixed to OFF
 1   2   3   4ON
OFF
 1   2   3   4ON
OFF
1   2   3   4   5   6    7  8ON
OFF 
						

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PA-24LCBV
Line Circuit
Note 1:Compromise Impedance (EIA/TIA-464A) and 600
Ω are composed as follows. SWITCH No. FUNCTION SWITCH SETTING MEANING
SW18
 Polarity reverse or
 Momentary OpenON Momentary open
OFF Polarity reverse
ON OFF
OFF
Slide switch (RVS) (OPEN)ON
350   1000   
0.21 
Compromise Impedance (EIA/TIA-464B)   600    
						

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PA-24LCBV
Line Circuit
6. Switch Setting Sheet
MODULE SLOT No. SWITCH NAME SWITCH SHAPE REMARKS
PIMSW00
(MB)Note:Normal operating mode is down.
SW10
(BNW0-7)
SW11
(BNW8-15)
SW12
(BNW16-23)
SW13
SW14
SW15
SW16
SW17
SW18
ON
1   2   3   4   5   6    7  8ON
1   2   3   4   5   6    7  8ON
1   2   3   4   5   6    7  8ON
 1   2   3   4ON
 1   2   3   4ON
 1   2   3   4ON
 1   2   3   4ON
1   2   3   4   5   6    7  8ON
OFF
(RVS) (OPEN)ON 
						

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PA-24LCBV
Line Circuit
7. External Interface
Accommodation of the LT connector leads and LC connector leads for this circuit card is shown in Figure
3-64.
(1)  PIM
When this circuit card is mounted in PIM, necessary leads appear on the LT connectors as follows.
Figure 3-64   LT Connector Lead Accommodation (PIM) (1/2)
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
411
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
42
43
44
45
46
47
4817
18
19
20
21
22
23
49
5024
25
232221201918171615141312111009080706050403020100
LT6 LT7 LT8 LT9 LT10 LT11LT0 LT1 LT2 LT3 LT4 LT5
23 19 15
22 18 14
21 17 13
20 16 1223 19 15
22 18 14
21 17 13
20 16 12 11 09 07 05 03 01
10 08 06 04 02 00 11 09 07 05 03 01
10 08 06 04 02 00
11 10 9 8 7 6 5 4 3 2 1 0 Group No. Slot No.LT Connector
PIM
Highway BlockLT 5, LT11 Connector
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
411
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
42
43
44
45
46
47
4817
18
19
20
21
22
23
49
5024
25B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
Located in    
LT 4, LT10 ConnectorLocated in      
						

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PA-24LCBV
Line Circuit
Figure 3-64   LT Connector Lead Accommodation (PIM) (2/2)
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
411
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
42
43
44
45
46
47
4817
18
19
20
21
22
23
49
5024
25
232221201918171615141312111009080706050403020100
LT6 LT7 LT8 LT9 LT10 LT11LT0 LT1 LT2 LT3 LT4 LT5
23 19 15
22 18 14
21 17 13
20 16 1223 19 15
22 18 14
21 17 13
20 16 12 11 09 07 05 03 01
10 08 06 04 02 00 11 09 07 05 03 01
10 08 06 04 02 00
11 10 9 8 7 6 5 4 3 2 1 0 PIM
Highway BlockLT 5, LT 11 Connector
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
411
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
42
43
44
45
46
47
4817
18
19
20
21
22
23
49
50
24
25
B8
B9
B10
B11
B12
B13
B14
B15A8
A9
A10
A11
A12
A13
A14
A15B16
B17
B18
B19
B20
B21
B22
B23A16
A17
A18
A19
A20
A21
A22
A23
Located in     
LT 4, LT10 Connector
Group No. Slot No.LT Connector 
						

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PA-24LCBV
Line Circuit
(2)  LC Connector Leads
Figure 3-65   LC Connector Lead Accommodation (LC Cable)
1A
2A
3A
4A
5A
6A
7A
8A1B
2B
3B
4B
5B
6B
7B
8BB0
B1
B2
B3
B4
B5
B6
B7 A0
A1
A2
A3
A4
A5
A6
A7
1A
2A
3A
4A
5A
6A
7A
8A1B
2B
3B
4B
5B
6B
7B
8BB0
B1
B2
B3
B4
B5
B6
B7 A0
A1
A2
A3
A4
A5
A6
A7
1A
2A
3A
4A
5A
6A
7A
8A1B
2B
3B
4B
5B
6B
7B
8BB0
B1
B2
B3
B4
B5
B6
B7 A0
A1
A2
A3
A4
A5
A6
A7
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 B0
B1
B2
B3
B4
B5
B6
B7
B0
B1
B2
B3
B4
B5
B6
B7
B0
B1
B2
B3
B4
B5
B6
B7A0
A1
A2
A3
A4
A5
A6
A7
A0
A1
A2
A3
A4
A5
A6
A7
A0
A1
A2
A3
A4
A5
A6
A7
LC CABLE
LC Connector (1)
CONN1Champ Connector
LT
LC Connector (2)
CONN2
LC Connector (3)
CONN3
PKG1
PKG2
PKG3 PKG1
PKG2
PKG3