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BEU8635-12 Datasheet(PDF) 3 Page - Aeroflex Circuit Technology

Part # BEU8635-12
Description  Balancing for 12-Cell Battery Cell Voltage Monitoring and Telemetry
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Manufacturer  AEROFLEX [Aeroflex Circuit Technology]
Direct Link  http://www.aeroflex.com
Logo AEROFLEX - Aeroflex Circuit Technology

BEU8635-12 Datasheet(HTML) 3 Page - Aeroflex Circuit Technology

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SCD8635-12 Rev A 3/3/08
Aeroflex Plainview
3
MIL-STD-1553B Telemetry & Commands
Analog or bi-level telemetry can be requested from the controller
and reported over the dual redundant 1553B interface with the
RT addresses configurable at the J1 connector.
Analog Telemetry
Each analog telemetry item can be requested individually on
sub-addresses 18, 19 or 22.
First a 1553B receive command with one data word as defined in
Table I, which specifies the telemetry item being requested, must
be issued.
After a minimum delay of 1.2ms, the data can be
retrieved by sending a 1553B transmit command for one data
word on the same sub-address on which the request was
initiated.
The 12-bit data reply is left justified in the 16-bit 1553B data word
with the four LSBs set to "0".
Bi-Level Telemetry
Bi-level telemetry can be requested on sub-addresses 18, 19 or
22.
First a 1553B receive command with one data word as defined in
Table II, which specifies the telemetry item being requested, must
be issued.
After a minimum delay of 1.2ms, the data can be
retrieved by sending a 1553B transmit command for one data
word on the same sub-address on which the request was
initiated.
Table I – Analog Telemetry
Item
Telemetry Title
Telemetry Reply
Scale
1st Data Word of
1553B Receive
Command (Hex)
1
4V Reference
-0.40V to 4.89V
0800
2
0V Reference
-0.40V to 4.89V
0803
3
Total Battery Voltage 1
0V to 122.88V
0805
4
Total Battery Voltage 2
0V to 122.88V
0806
5
Total Battery Voltage 3
0V to 122.88V
0809
6
Share Bus Voltage
0V to 5.12V
080A
7
Cell 1 Voltage
0V to 5.12V
0811
8
Cell 2 Voltage
0V to 5.12V
0812
9
Cell 3 Voltage
0V to 5.12V
0814
10
Cell 4 Voltage
0V to 5.12V
0817
11
Cell 5 Voltage
0V to 5.12V
0818
12
Cell 6 Voltage
0V to 5.12V
081B
13
Cell 7 Voltage
0V to 5.12V
081D
14
Cell 8 Voltage
0V to 5.12V
081E
15
Cell 9 Voltage
0V to 5.12V
0821
16
Cell 10 Voltage
0V to 5.12V
0822
17
Cell 11 Voltage
0V to 5.12V
0824
18
Cell 12 Voltage
0V to 5.12V
0827
19
Lowest Cell Voltage
0V to 5.12V
0871
20
Highest Cell Voltage
0V to 5.12V
0872
Table II – Bi-level Telemetry
Item
Telemetry Title
Status
Reply
Bit
1st Data Word
of 1553B
Receive
Command
(Hex)
1
Overvoltage Latch Status
1 = Set
D13
0C80


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