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2.8
DNR-Buffer
Module
2.9
DNR I/O
Boards
2.10 DNR-12-1G
DC Power
Thresholds
Table 2-1 DC Power Thresholds for DNR-X-1G RACKtangle and HalfRACK systems
Backplane
Power Rail
Voltages
Logic power
+3.3V, +2.5V,
supply
+1.5V, +1.2V
Analog power
+24V
supply
Fan power
+12V
supply
On-board
+VIn
DC/DCs that
use input
power
1.
Turn-on, V: The value of Vin at which the corresponding DC/DCs are turned on.
2.
Turn-off, V: The value of Vin at which the corresponding DC/DCs are turned off.
© Copyright 2018
United Electronic Industries, Inc.
DNR-X-1G Series RACKtangle and HalfRACK Systems
The DNR-BUFFER Module provides buffering between the CPU and I/O board
address/control/clock lines, which functions as described in Figure 2-16.
Although the module may not always be required, it is included to provide an
extra margin of safety against loss of data.
All standard cube-based PowerDNA I/O boards are also available as rack-
based PowerDNR boards. A typical PowerDNR board is functionally identical to
its corresponding PowerDNA version. The only difference between them is the
physical mounting arrangement. PowerDNR modules are designed for insertion
into the DNR-6 or DNR-12 enclosure; PowerDNA modules can be inserted only
into a PowerDNA Cube.
Refer to the datasheets and user manuals for detailed electrical specifications,
board descriptions, and user instructions for I/O boards. These documents are
available on the UEI website at
Table 2-1 lists the DC power threshold specifications for DNR-12-1G 12-slot
RACKtangle systems.
Turn-on
Reset
1
Voltage, V
Voltage, V
7.5
7.2
(When Vin is
below 7.2V, a
voltage reset
puts all
boards into
reset mode.)
8.5
-
8.5
-
7.8-8.8
-
NOTE: A DNR-12-1G CPU/NIC core module consumes only 70mW when Vin is
below 7V.
October 2018
The DNR-12-1G Series RACKtangle System
www.ueidaq.com.
Turn-off
2
Voltage, V
7.0
Supplies power to all CPUs
and FPGAs. DNR can com-
municate with Ethernet
when CPU is functional
7.8
Analog power supply is
used as a regulated source
for on-board DC/DCs on
most boards
8.4
7.5-8.5
Varies with board type.
Chapter 2
24
Notes
www.ueidaq.com
508.921.4600
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