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BEU8635-12 Datasheet(PDF) 3 Page - Aeroflex Circuit Technology |
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BEU8635-12 Datasheet(HTML) 3 Page - Aeroflex Circuit Technology |
3 / 8 page 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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