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BEU8637-08-S Datasheet(PDF) 4 Page - Aeroflex Circuit Technology |
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BEU8637-08-S Datasheet(HTML) 4 Page - Aeroflex Circuit Technology |
4 / 9 page SCD8637-08 Rev A 3/21/08 Aeroflex Plainview 4 MIL-STD-1553B Telemetry & Commands (Each 8-cell battery) Analog or bi-level telemetry can be requested from either the primary or the redundant controller and reported over the dual redundant 1553B interface with the RT addresses configurable at the J1 and J4 connectors. 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 (Each 8-cell battery) 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 61.44V 0805 4 Total Battery Voltage 2 0V to 61.44V 0806 5 Total Battery Voltage 3 0V to 61.44V 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 13 Voltage 0V to 5.12V 0828 16 Cell 14 Voltage 0V to 5.12V 082B 17 Cell 15 Voltage 0V to 5.12V 082D 18 Cell 16 Voltage 0V to 5.12V 082E 19 Cell 17 Voltage 0V to 5.12V 0830 20 Cell 18 Voltage 0V to 5.12V 0833 21 Cell 19 Voltage 0V to 5.12V 0835 22 Cell 20 Voltage 0V to 5.12V 0836 23 Lowest Cell Voltage 0V to 5.12V 0871 24 Highest Cell Voltage 0V to 5.12V 0872 1/ For Battery A. 2/ For Battery B. ⎭ ⎫ ⎬1/ ⎭ ⎫ ⎬2/ 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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