Miranda NV5100MC Master Control, Справочное руководство

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NV5100MC Master Control • Reference Man ual 37
3. Frames
Other Modules
Other Modules
Control Cards
There are two types: the EM0374 (universal) router control card and the EM0414 clock generator
card. The EM0374 is required only if you have a router in the frame. The frame has two control
card slots. One of the slots for a redundant (or secondary) control card.
In all case, the control cards provide clocks and AES reference signals to the MCPMs.
The router (if present) receives instructions from a router control system.
MCPMs receive instructions from control panels or automation. (The MCPMs are independent
modules and, although they receive clocking from the control card and video and audio from the
motherboard, they are controlled independently.)
EM0374
A memory backup battery located along the front edge of the module maintains data in RAM for
several months or longer if power is turned off or the module is removed. This ensures that the
router can return to its previous state after a power outage. The battery may be replaced with the
control card powered on without affecting the operation of the system.
Flash memory stores FPGA code and application program(s), including protocols for communicat-
ing with the external control system(s). The flash memory can be reprogrammed using UniConfig.
Updating or changing the control system protocol is a quick and relatively easy process.
A pair of EEPROMs are located on the motherboard — one for each control card. The EEPROMs
store UniConfig settings and other system parameters. Thus, any control card can be installed in the
frame without reconfiguration. The configuration stays with the frame.
Also included on the controller card is the processing circuitry for the video and AES reference
inputs. With respect to video, a timing chip receives the reference input(s) and uses them to create a
vertical interval strobe and other clocks. These clocks are used to enable crosspoint switching dur-
ing the video vertical blanking interval and to control other system functions. AES reference sig-
nals are processed similarly. An AES receiver chip extracts clock and formatting information from
the supplied AES reference(s). These signals are applied to an FPGA that in turn derives all
required signals for AES operation.
Interface circuitry on the control module connects to the various serial data ports on the backplane
and interfaces those data ports to the microprocessor. The Ethernet NIC is auto-negotiating. All
ports may be used simultaneously.
On-board power regulators 48 VDC from the power supply module(s) and produce
±12VDC, +5VDC, and +3.3VDC for on-board circuits. Power and signal presence LEDs on the
front of the card indicate when power and reference input signals are present.
See EM0374 Jumpers on page 176 for more information.
EM0414
The EM0414 is an AES clock generator card. It does not support any router control functions.
See EM0414 Jumpers on page 177 for more information.