NEC Neax 2400 Imx Circuit Card Manual

							CHAPTER 3 ND-70182 (E)
Page 186
Revision 4.0
PH-CK17
Phase Lock Oscillator
4. Lamp Indications
Lamp indications for this circuit card are shown in the table below.
LAMP NAME COLOR STATE
AC TGreen Remains lit while this circuit card is in active state.
Off Remains off while this circuit card is in stand-by state.
MJ RedLights when the following MJ fault has occurred:
All of the clock supply routes have failed when the system operates as the clock 
subordinate office.
32.768 MHz output clock failure.
8 KHz output FH failure.
5 msec ×  “n” output FH failure.
Input Frame Pulse (FP) failure (FP is supplied by the SYNC card).
Internal OSC (±0.3 ppm deviation) has failed when the system operates as the 
clock source office.
MN RedLights when the following MN fault has occurred: 
One or more (but not all) DTI/DCS clock supply routes failed.
Drifting failure.
Internal OSC (±0.3 ppm deviation) failure.
SYNCGreen Remains lit while the system is synchronized with the network.
OFFRemains off when either of the following has occurred. 
DCS clock failure when receiving the clock signals from the DCS. 
DTI clock failure when receiving the clock signals from the DTI. 
Drifting failure.
ICK Green Lights when the internal oscillator is operating normally. 
PALM Red Remains lit when power is abnormal. 
						

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Revision 4.0
PH-CK17
Phase Lock Oscillator
5. Switch Settings
Standard settings for switches on this circuit card are shown in the table below.
SWITCH 
NAMESETTINGSTANDARD 
SETTINGMEANING
MBUP Circuit card Make-busy.
DOWN×Circuit card Make-busy cancel.
SW03 1 - F 1 Fixed to “1.”
SWITCH 
NAMESWITCH
NO.SETTINGSTANDARD 
SETTINGMEANING
SW011ON Clock subordinate office.
OFF Clock source office.
2ON Digital Clock Supply route zero (DCS 0) is used.
OFF Digital Clock Supply route zero (DCS 0) is not used.
3ON Digital Clock Supply route one (DCS 1) is used.
OFF Digital Clock Supply route one (DCS 1) is not used.
4ON8 KHz of Frame Head signals are not extracted from the DCS 
signals (which is composed of 64 KHz + 8 KHz).
OFF8 KHz of Frame Head signals are extracted from the DCS sig-
nals (which is composed of 64 KHz + 8 KHz).
5ONWhen clock source failure has occurred in all supply routes, 
the PLO outputs the original clock of the internal oscillator.
OFFWhen clock source failure has occurred in all supply routes, 
the PLO continues outputting the current phase clock.
6ON This circuit card is associated with SYNC (PA-CK11) card.
OFFThis circuit card is not associated with SYNC (PA-CK11) 
card.
7ON A-law CODEC is used for the hold music.
OFF×µ-law CODEC is used for the hold music.
8OFF ×Not used 
						

							CHAPTER 3 ND-70182 (E)
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Revision 4.0
PH-CK17
Phase Lock Oscillator
SWITCH 
NAMESWITCH
NO.SETTINGSTANDARD 
SETTINGMEANING
SW021ON DIU 0 is used as the DTI clock supply route zero.
OFF DIU 0 is not used.
2ON DIU 1 is used as the DTI clock supply route one.
OFF DIU 1 is not used.
3ON DIU 2 is used as the DTI clock supply route two.
OFF DIU 2 is not used.
4ON DIU 3 is used as the DTI clock supply route three.
OFF DIU 3 is not used.
5ON×1.5 M clock for DIU 0
OFF 2 M clock for DIU 0
6ON×1.5 M clock for DIU 1
OFF 2 M clock for DIU 1
7ON×1.5 M clock for DIU 2
OFF 2 M clock for DIU 2
8ON×1.5 M clock for DIU 3
OFF 2 M clock for DIU 3
SW051ON  External hold tone source is used via FM lead.
OFF×MUSIC ROM is used as the hold tone.
2OFF Not used
SWITCH 
NAMESWITCH
NO.SETTINGSTANDARD 
SETTINGMEANING
SW061
2
3
4
SW8F-1 SW8F-2Impedance of the External 
Music Source 0 (FM 0)
OFF OFF 600 Ω
ON OFF 8.2 Ω
OFF ON 47K Ω
SW8F-3 SW8F-4Impedance of the External 
Music Source 1 (FM 1)
OFF OFF 600 Ω
ON OFF 8.2 Ω
OFF ON 47K Ω 
						

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Revision 4.0
PH-CK17
Phase Lock Oscillator
SW041
2
3
4ON Not used
OFF×Not used
5
MUSIC CH1 selection. The kind of music varies depending on the melody IC  located on this 
circuit card. 6
7
8ON Not used
OFF×Not used SWITCH 
NAMESWITCH
NO.SETTINGSTANDARD 
SETTINGMEANING
SWA0-1 SWA0-2 SWA0-3 MUSIC
OFF OFF OFF Für Elise
ON OFF OFF Maiden’s prayer
Not Used OFF ON Buzzer
Not Used ON OFF Chime 
						

							CHAPTER 3 ND-70182 (E)
Page 190
Revision 4.0
PH-CK17
Phase Lock Oscillator
6. External Interface
When this circuit card is located in the TSWM, connect 34PH EXCLK CA-A to the EXCLK0/EXCLK1
connectors on the backplane of the TSWM.
Figure 3-22   LT Connector Lead Location of PLO (TSWM)
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23Slot No.
TSWM
FRONT VIEW
PLO #1
PLO #0
26 1
FM 1 27 2
FM 0 28 3
SYN 1BE
29 4
SYN 0BE
30 5
DIU 3BSYN 1A
31 6
DIU 2BSYN 0A
32 7
DIU 1BDIU 3A
33 8
DIU 0BDIU 2A
34 9
DCS BDIU 1A
35 10 DIU 0A
36 11 DCS A
37 12
38 13
EXCLK0
(Slot No.21) EXCLK1
(Slot No.23)TSWMREAR VIEW
34PH EXCLK 
CA-A
34PH EXCLK CA-A34PH EXCLK CA-A LEAD ACCOMMODATION
Installation Cable
MDF
To Digital Interface and/or DCS
Mounting ModuleTSWM 
						

							ND-70182 (E) CHAPTER 3
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Revision 4.0
PH-CK17
Phase Lock Oscillator
Figure 3-23   Connecting Route Diagram
DCSB1
DIU0A1
DIU0B1
DIU1A1
DIU1B1
DIU2A1
DIU2B1
DIU3A1
DIU3B1 DCSA1
DCSB0
DIU0A0
DIU0B0
DIU1A0
DIU1B0
DIU2A0
DIU2B0
DIU3A0
DIU3B0 DCSA0
POUT B POUT A
POUT B
POUT A
POUT B
POUT A
POUT B
POUT A
CCT /DTI
/PRT
CCT /DTI
/PRT
CCT /DTI
/PRT
CCT /DTI
/PRT
PLO #0
PLO #1
DCS
Note :
The following circuit cards have Clock Output Leads for a PLO card:  CCT (PA-24CCTA, PA-30CCTB),
DTI (PA-24DTR, PA-30DTS), and PRT (PA-24PRT, PA-30PRTC). 
MDF PBX 
						

							CHAPTER 3 ND-70182 (E)
Page 192
Revision 4.0
PH-CK17
Phase Lock Oscillator
7. Switch Setting Sheet
SWITCH NAME SWITCH SHAPE REMARKS
MB
SW01
SW02
SW03
SW05
SW06
SW04
ON
1234ON5678
1234ON5678
12ON
1234ON
1234ON5678 
						

							ND-70182 (E) CHAPTER 3
Page 193
Revision 4.0
PH-CK17-A
Phase Lock Oscillator
PH-CK17-A
Phase Lock Oscillator
1. General Function
This circuit card used together with a direct digital interface circuit card, sets up network synchronization
between networks. Since this circuit card provides a high precision base clock oscillator, the system
containing this circuit card can be a clock source office of the digital network. As seen in the figure below,
the PLO can be redundant regardless of the system switching network selection. This circuit card is used
for the IMX-U system.
Figure 3-24   Location of PH-CK17-A (PLO)
LN0
(IMG2/IMG3)LN3
(IMG2/IMG3)
32M, FH+WFH
PLO ACT32M, FH+WFH
PLO ACT
CLK1
(TSWM1)
TSW
10~13
CLK0
(TSWM1)
TSW
00~03
MUX
(System1)MUX
(System0)
LC/TRK
HSW00 ISW
HSW01
CLK1
(TSWM1)
TSW
10~13
CLK0
(TSWM1)
TSW
00~03
MUX
(System1)MUX
(System0)
LC/TRK
LN0
(IMG0/IMG1)from
LN DTIfrom
LN DTI
32M, FH+WFH
PLO ACT32M, FH+WFH
PLO ACT
(BWB)32M, FH+WFH
PLO ACT
(BWB)
64K+FH, WFH
TSW ACT
(Cable)64K+FH, WFH
TSW ACT
(Cable)
PLO 1
(TSWM0)
TSW
10~13
PLO 0
(TSWM0)
TSW
00~03
MUX
(System1)MUX
(System0)
LC/TRK
LN3
(IMG0/IMG1)
32M, FH+WFH
PLO ACT
PLO 1
(TSWM0)
TSW
10~13
PLO 0
(TSWM0)
TSW
00~03
MUX
(System1)MUX
(System0)
LC/TRK
TSW00 TSW03HSW10 OSC64K+8K
(BWB)
(BWB)
CLK, FH, WFH
ACT, ALM
PLO 0
DTI0 DCS0 (MDF) DCS1123
PLO 1
SEL
PLL
Drv
HSW11
TSW10 TSW13
SEL
PLL
Drv
OSC
~
~~
~ 
						

							CHAPTER 3 ND-70182 (E)
Page 194
Revision 4.0
PH-CK17-A
Phase Lock Oscillator
2. Mounting Location/Condition
This circuit card can be mounted in the shaded slots shown below.
Mounting ModuleISWM
00 01 02 03 04 05 06 070809 10 111213 14 15 16 17 18 19
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 1920212223
PLO (#0) PLO (#1)
Mounting ModuleTSWM0 (IMG1)
PLO (#0) PLO (#1) 
						

							ND-70182 (E) CHAPTER 3
Page 195
Revision 4.0
PH-CK17-A
Phase Lock Oscillator
3. Face Layout of Lamps, Switches, and Connectors
The face layout of lamps, switches, and connectors are shown in Figure 3-25
Figure 3-25   Face Layout of PH-CK17-A (PLO)
1   2  3  4  
1   2    
SW11
SW10SW12
MB OPE
1   2  3  4  5  6  7  8 
SW01
SW02
SW03
12345678 12345678
MJ
MN
SYNC
ICK
CKPKG
ALM0
ALM1
PALM