VMIC VMIVME-2540/VMIVME-2540-000 24-Channel Intelligent Counter
The VMIVME-2540 is used for buffer measurement and queue control commands. The measurement function is also supported in continuous measurement mode, where measurements can be repeated without the involvement of the host CPU. I/O connections are routed through high-density connectors located on the front panel, supporting differential and single-ended signal levels. The user data exchange interface for measurement and generation modes conforms to the ANSI/IEEE standard 754-1985 for 32-bit floating-point operations. The integer mode operates with double complement signed and unsigned arithmetic.
VMIVME-2540 24 channel intelligent counter/controller parameter specification
• Event count – up to 4 gigabit events
Frequency measurement -1.16 x 10-3hz to 2.5MHz
• Period/pulse width measurement – 400 ns to 8.5899 x 106 s(32-bit floating point), 400 seconds to 858 seconds (32-bit unsigned integer)
• Square wave/pulse train generation -0.0076 Hz to 2.5 MHz
• Timer/Periodic VMEbus interrupt – 0.0076 to 1,000 Hz
• Orthogonal position measurement – sin/cos up to 1 MHz, 32-bit counter, limit/mode check
• Integer period/pulse width measurements 16 and 32 bits, discrete or continuous; Low data transfer lag
Programming outputs – up to 24 discrete outputs
• Pulse train mode – train’s N pulse and programmable duty cycle
• Orthogonal position control output -±1/4 wave control resolution; Up to 1.25 MHz step rate and ±32767 steps per command
• Integer QPM group acquisition – Capture two integer QPM measurements simultaneously
• Event trigger timer delay – the number of seconds after generating a VMEbus interrupt up to 131.1 event edge input; Retriggerable
•24 control/measurement interfaces :24 clock, 24 gate, 24 output
•RS-422 differential interface, supports single-end TTL input
• Option to configure 4, 8, 16, and 24 interfaces
• Onboard 15mhz 68HC000 CPU
•A32/A24/D32/D16/D8 (EO) VME secondary interface, 64kbyte VMEbus memory window
Data exchange interface: The ANSI/IEEE standard 754-1985 is 32-bit floating-point arithmetic
• Continuous measurement mode
•VMEbus is compatible with ANSI/IEEE 1014-1987 IEC 821 and 297
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