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NEC Neax 2400 Imx Circuit Card Manual

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    							CHAPTER 3 ND-70182 (E)
    Page 156
    Revision 4.0
    PH-CK16
    Phase Lock Oscillator
    The source clock of the clock subordinate office is either the digital clock supply (DCS) or the digital interface
    clock (DIU0 - DIU3). When clock source failure has occurred, the PLO chooses another clock source
    automatically in the order of:
    1. DCS
    2. DIU0
    3. DIU1
    4. DIU2
    5. DIU3
    6. PLO changeover or the PLO internal oscillator drifting
    The PLO can output the clock signals (CLK) and the frame head signals (FH) as follows:
    32.768 MHz CLK
    8 KHz FH
    5 msec ×  “n” FH 
    						
    							ND-70182 (E) CHAPTER 3
    Page 157
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    PH-CK16
    Phase Lock Oscillator
    The MUSIC ROM located on this circuit card also contains the hold tone, and is supplied to the TSW circuit
    card. When an external music on hold is applied to the 4 IMG system, this circuit card provides the interface for
    the external hold tone source.
    Figure 3-6   Music Source
    SELSEL
    SEL
    Speech Path Memory
    for Music/Tone
    Music/Tone
    MUSIC ROM
    TDSW00PLO#0
    TONE ROM
    SELSEL
    SEL
    Speech Path Memory
    for Music/Tone
    Music/Tone
    MUSIC ROM
    TDSW1PLO#1
    TONE ROM
    FMFM 
    						
    							CHAPTER 3 ND-70182 (E)
    Page 158
    Revision 4.0
    PH-CK16
    Phase Lock Oscillator
    2. Mounting Location/Condition
    This circuit card is mounted in the TSWM of the slot shown below.
    3. Face Layout of Lamps, Switches, and Connectors
    The face layout of lamps, switches, and connectors is shown below.
    Figure 3-7   Face Layout of PH-CK16 (PLO)
    Mounting ModuleTSWM
    00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 1920212223PLO 0 PLO 1
    1   2  3  4  
    1   2    
    SW8F
    SWAC
    SWAB
    MB ACT
    1   2  3  4  5  6  7  8 
    MJ
    MN
    SYNC
    ICK
    PALM
    SW01
    SW02
    SW03 
    						
    							ND-70182 (E) CHAPTER 3
    Page 159
    Revision 4.0
    PH-CK16
    Phase Lock Oscillator
    4. Lamp Indications
    Lamp indications for this circuit card are shown in the table below.
    5. Switch Settings
    Standard settings of switches on 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 (±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 routes have failed 
    Drifting failure 
    Internal OSC (±5 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.
    SWITCH 
    NAMESETTINGSTANDARD 
    SETTINGMEANING
    MBUP Circuit card Make-busy.
    DOWN×Circuit card Make-busy cancel.
    SW03 1 - F 1 Fixed to “1. 
    						
    							CHAPTER 3 ND-70182 (E)
    Page 160
    Revision 4.0
    PH-CK16
    Phase Lock Oscillator
    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 
    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.
    OFFWhen clock source failure has not occurred in all supply 
    routes, the PLO continues outputting the current phase clock.
    6ONThis circuit card is associated with SYNC (PA-CK16 WCS) 
    card.
    OFFThis circuit card is not associated with SYNC (PA-CK16 
    WCS) card.
    7ON A-law CODEC is used for the hold music.
    OFF×µ-law CODEC is used for the hold music.
    8 OFF ×Not used 
    						
    							ND-70182 (E) CHAPTER 3
    Page 161
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    PH-CK16
    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
    SWAC1ON  External hold tone source is used via FM lead.
    OFF×MUSIC ROM is used as the hold tone.
    2OFF×Not used
    SW8F1
    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 
    						
    							CHAPTER 3 ND-70182 (E)
    Page 162
    Revision 4.0
    PH-CK16
    Phase Lock Oscillator
    SWITCH 
    NAMESWITCH
    NO.SETTINGSTANDARD 
    SETTINGMEANING
    SWAB1
    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
    SWA0-1 SWA0-2 SWA0-3 MUSIC
    OFF OFF OFF Für Elise
    ON OFF OFF Maiden’s prayer
    Not usedOFF ON Buzzer
    Not usedON OFF Chime 
    						
    							ND-70182 (E) CHAPTER 3
    Page 163
    Revision 4.0
    PH-CK16
    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 3-8   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 
    						
    							CHAPTER 3 ND-70182 (E)
    Page 164
    Revision 4.0
    PH-CK16
    Phase Lock Oscillator
    Figure 3-9   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 
    						
    							ND-70182 (E) CHAPTER 3
    Page 165
    Revision 4.0
    PH-CK16
    Phase Lock Oscillator
    7. Switch Setting Sheet
    SWITCH NAME SWITCH SHAPE REMARKS
    MB
    SW01
    SW02
    SW03
    SWAC
    SW8F
    SWAB
    ON
    1234ON5678
    1234ON5678
    12ON
    1234ON
    1234ON5678 
    						
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