Miranda NV8144, User Manual

Page: 16 / 140

6 Rev 2.2 • 27 Mar 10
1. Introduction
Signal Rates and Flow
As an example, NV8576 has 8 crosspoint cards that each manage up to 288 × 288 signals and are
divided into 2 sets of 4, with each set of 4 fanning out and distributing 288 inputs (1–288 and 289–
576) to all 1152 outputs. In a fully loaded frame, inputs 1–288 on the left side of the frame (when
facing the front of the router) are forwarded to crosspoint cards 1, 2, 7 and 8. Inputs 289–576, situ-
ated on the right side of the frame, are forwarded to crosspoint cards 3, 4, 9 and 10. (See Figure 1-2
and Figure 1-3 on page 7.)
Figure 1-2. Example of NV8576 Inputs Signal Flow (Front View)
FAN
OUTPUTS
1–144
INPUTS
1–144
XPT
(INPUTS 1–
288)
INPUT
MONIT
OR
(8 cards)
OUTPUTS
289–432
(8 cards)
OUTPUTS
577–720
(8 cards)
OUTPUTS
865–1008
(8 cards)
OUTPUT
MONIT
OR
(16 cards)
INPUTS
289–432
(16 cards)
OUTPUTS 1–576 OUTPUTS 577–1152
OUTPUTS
145–288
(8 cards)
INPUTS
145–288
(16 cards)
INPUTS
433–576
(16 cards)
(not used)
FAN
OUTPUTS
433–576
(8 cards)
OUTPUTS
721–864
(8 cards)
OUTPUTS
1009–1152
(8 cards)
INPUT
MONIT
OR
OUTPUT
MONIT
OR
SEC. CONTROL PRIM. CONTROL
XPT
(INPUTS 1–
288)
XPT
(INPUTS 289
–
576)
XPT
(INPUTS 289
–
576)
XPT
(INPUTS 1–
288)
XPT
(INPUTS 1–
288)
XPT
(INPUTS 289
–
576)
XPT
(INPUTS 289
–
576)
REDUNDANT
CROSSPOINT