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In 1987, IEEE introduced IEEE 488.2-1987 specification "Standard Codes, Formats, Protocols, and Common Commands", it was later revised in 1992 as IEEE 488.2-1992. [8] While IEEE 488.2 provided a device-independent syntax, there was still no standard for instrument-specific commands.
Encoder receiver transmitter (ERT) is a packet radio protocol developed by Itron for automatic meter reading. [1] The technology is used to transmit data from utility meters over a short range so a utility vehicle can collect meter data without a worker physically inspecting each meter. The ERT protocol was first described in U.S. patent ...
Each bit of the RC-5 code word contains 32 carrier pulses, and an equal duration of silence, so the bit time is 64×27.778 μs = 1.778 ms, and the 14 symbols (bits) of a complete RC-5 code word take 24.889 ms to transmit. The code word is repeated every 113.778 ms (4096 ÷ 36 kHz) as long as a key remains pressed.
Ping operates by means of Internet Control Message Protocol (ICMP) packets. Pinging involves sending an ICMP echo request to the target host and waiting for an ICMP echo reply. The program reports errors, packet loss , and a statistical summary of the results, typically including the minimum, maximum, the mean round-trip times, and standard ...
This meter also provides 7-day, 14-day, and 30-day averages, with the option of averaging "before meal" or "after meal" records. Currently, there are two products in the LifeScan OneTouch family: OneTouch Select Plus Flex meter and OneTouch Plus Meter. They use the same strips to monitor blood sugar. It is a code free meter.
Cisco's implementation of traceroute also uses a sequence of UDP datagrams, each with incrementing TTL values, to an invalid port number at the remote host; by default, UDP port 33434 is used. An extended version of this command (known as the extended traceroute command) can change the destination port number used by the UDP probe messages.
The QR codes, which appear to be connected to a 'quishing' scam, were found on about 150 parking meters along the Esplanade and in the Riviera Village area, police said. The QR codes, which appear ...
Code Status Description 0 – Echo Reply [2]: 14 0: Echo reply (used to ping) 1 and 2 unassigned: Reserved: 3 – Destination Unreachable [2]: 4 [8] 0: Destination network unreachable 1: Destination host unreachable 2: Destination protocol unreachable 3: Destination port unreachable 4: Fragmentation required, and DF flag set 5: Source route ...