NEC Neax 2400 Imx Circuit Card Manual

							CHAPTER 3 ND-70182 (E)
Page 166
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
PH-CK16-A
Phase Lock Oscillator
1. General Function
This circuit card, used together with a direct digital interface circuit card, sets up network synchronization.
With this circuit card, the system can be a clock subordinate 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. 
						

							ND-70182 (E) CHAPTER 3
Page 167
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
Figure 3-10   Location of PH-CK16-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 168
Revision 4.0
PH-CK16-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 07 0809 10 11 1213 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 19 2021 2223
PLO (#0) PLO (#1)
Mounting ModuleTSWM0 (IMG1)
PLO (#0) PLO (#1) 
						

							ND-70182 (E) CHAPTER 3
Page 169
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
3. Face Layout of Lamps, Switches, and Connectors
The face layout of lamps, switches, and connectors are shown in Figure 3-11.
Figure 3-11   Face Layout of PH-CK16-A (PLO)
1   2  3  4  
1   2    
SW11
SW10SW12
MB OPE
1   2  3  4  5  6  7  8 
MJ
MN
SYNC
ICK
CKPKG
ALM0
ALM1
PALM
SW01
SW02
SW03
12345678 12345678 
						

							CHAPTER 3 ND-70182 (E)
Page 170
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
4. Lamp Indications
Lamp indications for this circuit card are shown in the table below:
Note:This lamp is effective when this card is mounted in TSWM0 of the IMX-U system.
5. Switch Settings
Standard settings for switches on this circuit card are shown in the table below.
LAMP NAME COLOR STATE
OPE Green Remains lit while this circuit card is in active 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 (including CLK card)
8 KHz output clock failure (including CLK card)
Input Frame Pulse (FP) failure (FP is supplied by the SYNC card)  Internal OSC 
(±5 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 route has failed 
Drifting failure 
Internal OSC (±5 ppm deviation) failure
SYNC Green Remains lit while the system is synchronized with the network.
ICK Green Lights when the internal oscillator is operating normally.
CKPKG
NoteGreen Lights when the CLK card in TSWM1 is in normal operation.
ALM0
NoteRed Lights when clock failure has occurred in the CLK card.
ALM1
NoteRed Lights when FH failure has occurred in the CLK card.
PALM Red Remains lit when the On-Board Power Supply is abnormal.
SWITCH 
NAMESETTINGSTANDARD 
SETTINGMEANING
MBUP Circuit card Make-busy.
DOWN×Circuit card Make-busy cancel.
SW03 1 - F 1 Fixed to “1. 
						

							ND-70182 (E) CHAPTER 3
Page 171
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
Note:
When this card is used in the 4-IMG or ISWM of the IMX-U system, specify the clock source (DCS or DTI)
according to the clock network configuration for the office.
Note 1:This standard setting is applicable when this card is mounted in TSWM0 of the IMX-U system.
SWITCH 
NAMESWITCH
NO.SETTINGSTANDARD 
SETTINGMEANING
SW01
Note1ON
×    Note 1Clock subordinate office.
OFF Clock source office.
2ON
×    Note 1Digital Clock Supply route zero (DCS 0) is used.
OFF Digital Clock Supply route zero (DCS 0) is not used.
3ON
×    Note 1Digital 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 extracted from the DCS sig-
nals (which is composed of 64 KHz + 8 KHz).
OFF
×    Note 18 KHz of Frame Head signals are not extracted from the DCS 
signals (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.
OFF×When clock source failure has not occurred, the PLO keeps on 
outputting the current phase clock.
6ON
×    Note 1T h i s  c i r c u i t  c a r d  i                                                                                                                                                                                                                                                                                          
s associated with SYNC (PA-CK11) card.
OFFThis circuit card is not associated with SYNC (PA-CK16 
WCS) card.
7ON A-law CODEC is used for Music-on-Hold.
OFF×µ-law CODEC is used for Music-on-Hold.
8OFF ×Fixed OFF (Not used). 
						

							CHAPTER 3 ND-70182 (E)
Page 172
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
Note:
When this card is mounted in TSWM0 of the IMX-U system, the DCS clock from the ISW is used. The DTI
clock can also be used as an alternate clock supply route in case of DCS clock failure.
SWITCH 
NAMESWITCH
NO.SETTINGSTANDARD 
SETTINGMEANING
SW02
Note1ON 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.
SW101ON  External hold tone source is used via FM lead.
OFF×MUSIC ROM is used as the hold tone.
2ON CLK card is not used.
OFF CLK card is used. 
						

							ND-70182 (E) CHAPTER 3
Page 173
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
SWITCH 
NAMESWITCH
NO.SETTINGSTANDARD 
SETTINGMEANING
SW111
2
3
4
SW121
2
3
4ON Not used
OFF×Not used
5
MUSIC (CH1) selection. The music varies depending on the melody IC located on this circuit 
card. 6
7
8ON Not used
OFF×Not used
SW11-1 SW11-2Impedance of the External 
Music Source 0 (FM 0)
OFF OFF 600 Ω
ON OFF 8.2 Ω
OFF ON 47K Ω
SW11-3 SW11-4Impedance of the External 
Music Source 1 (FM 1)
OFF OFF 600 Ω
ON OFF 8.2 Ω
OFF ON 47K Ω
SW12-1 SW12-2 SW12-3 MUSIC
OFF OFF OFF Für Elise
ON OFF OFF Maiden’s prayer
Not Used ON OFF Buzzer
Not Used OFF ON Chime 
						

							CHAPTER 3 ND-70182 (E)
Page 174
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
6. External Interface
PLO leads appear on the LT connectors labeled EXCLK0 and EXCLK1.
PLO mounting slots
The PLO card is mounted in Slots 21 and 23 of TSWM.
LT cable connectors
Connect the LT cables to the connectors labeled EXCLK0 and EXCLK1 on the TSWM backplane.
Figure 3-12   PLO Pin Assignments for Receiving Clock (4 IMG System) (1/2) 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
EXCLK0EXCLK1
PLO
PLO
TSW Front View
TSWM
EXCLK0EXCLK1
TSWMBackplane 
						

							ND-70182 (E) CHAPTER 3
Page 175
Revision 4.0
PH-CK16-A
Phase Lock Oscillator
EXCLK0/EXCLK1 connector Pin Assignment
Pins are assigned as follows on the EXCLK0/EXCLK1 connectors. When the clock is distributed from a
digital interface, use one pair of DIUxxx in one of the 4 inputs. (There are a maximum of 4 inputs.) DIU
leads have the following precedence: DIU0xx (high) 
➝ DIU3xx (low).
Figure 3-12   PLO Pin Assignments for Receiving Clock (4 IMG System) (2/2)
PLO input leads appear on the LT connectors labeled EXCLK0 and EXCLK1.
PLO mounting slots
The PLO card is mounted in Slots 09 and 13 of ISWM.
34PH ISWM EXCLK CA-A
34PH ISWM EXCLK CA-A
REAR VIEW
EXCLK0EXCLK1TSWM
MDF
Installation Cable To Digital Interface and/or DCS
34PH ISWM EXCLK CA-A Cable Lead Location
26
27
28
29
30
31
32
33
34
35
36
37
381
2
3
4
5
6
7
8
9
10
11
12
13 FM1
FM0
DIU3B
DIU2B
DIU1B
DIU0B
DCSB
SYN1B
SYN0BE
E
DIU3A
DIU2A
DIU1A
DIU0A
DCSA
SYN1A
SYN0A
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 23EXCLK0EXCLK1
PLO
PLO
Front View
ISWM