M e r i d i a n I I U s e r M a n u a l
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A P P E N D I X K
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M e r i d i a n I I U s e r M a n u a l
S P E C I F I C A T I O N S
T1 Clock Output:
Quantity: 0, 1 or 2.
Type: Transformer-coupled complementary-pair.
Frequency: 1.544 Mbps.
Synchronization: Phase locked to the Meridian II TimeBase 10 MHz.
Data Format: All ones. User-selectable for Unframed, D4 SuperFrame (SF)
or CRC6 Extended SuperFrame (ESF).
Line Z: 100Ω nominal.
Pulse Shape: Conforms to ITU-T G.703.
Pulse Amplitude: 3.0V pk.
MTIE/Jitter/Wander: Conforms to ANSI T1 101 and ITU-T G.811/G.824.
Line Build-Out: User-selectable for short haul (DSX-1 0-655 ft.
Line Code: Bipolar Return To Zero, Alternate Mark Inversion (AMI)
(Identical to B8ZS or PDE with all ones data.)
Alarm Code: User-selectable for Alarm Indication Signal (AIS),
or Status Sync Messaging (SSM), or none at Major (Blue) Alarm.
All zeros (LoS) at Critical (Red) Alarm.
Connector: RJ-45 style modular jack (RJ48C-compatible), 1 per output, or DB9M.
RJ48C Pinout: Pin 4 is Clock Out Ring (-). Pin 5 is Clock Out Tip (+).
DB9M Pinout: Pins 1, 5, 7 and 8 are Ground. Pin 2 is Clock Out Ring A (-). Pin 3 is No Connect.
Pin 4 is Clock Out Ring B (-). Pin 6 is Clock Out Tip A (+). Pin 9 is Clock Out Tip B (+).
Alarm Relay Outputs:
Quantity: 0 or 3.
Type: Form C.
Rating: 750 mA @ 42VAC/60VDC.
NC Contact: Closed for alarm-active condition.
NO Contact: Closed for alarm-inactive condition.
Minor Alarm: Active at minor clock faults.
Major Alarm: Active at major clock fault (Blue Alarm).
Critical Alarm: Active at clock operational fault (Red Alarm).
Connector: DB9 Female.
Pinout:
1
Minor NC
2
Minor NO
3
Major COM
4
Critical NC
5
Critical NO
6
Minor COM
7
Major NC
8
Major NO
9
Critical COM
Summary of Contents for Meridian II
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