CXR 54500-16, Руководство пользователя, Страница: 54 / 214

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CXR Larus 80-100-400 Issue 2 July 2006 page
3-15
3.34 Model 54522 Stratum 3E/LNC Track and Hold Clock Card
3.341 For an illustration of the Model 54522, refer to Figure 3-4.
3.342 Provisioning:
Model 54522-5 supports the AB input architecture.
3.343 Input
Signals:
a. DS1 Inputs
Recovered clock from 54511 input cards, nominal 1.544 MHz, tracks within
±7.1 Hz.
b. E1 Inputs
Recovered clock from 54512-4 input cards, nominal 2.048 MHz, tracks
within ±9.4 Hz.
c. 2048 kHz Inputs
Recovered clock from 54512-3 input cards, nominal 2.048 MHz, tracks
within ±9.4 Hz.
d. Composite Clock Inputs
Recovered clock from 54513-3 input cards, nominal 64 KHz, tracks within
±0.3 Hz.
e. 5 MHz Inputs
Recovered clock from 54513-4 input cards, nominal 5 MHz, tracks within
±23 Hz.
f. 10 MHz Inputs
Recovered clock from 54513-5 input cards, nominal 10 MHz, tracks within
±46 Hz.
g. Serial Data in from transceiver on both input cards.
h. Transceiver Interrupt from both input cards.
i. Transceiver Select lines from other track and hold card
3.3431 Framing
Format:
a. DS1 Inputs
SF or ESF on each input automatically selected or set from 54550 through
the serial port.