The V250 is a single-wide, 6U VME module that provides 64 non-isolated channels of digital input/output. Each 16-channel bank shares programmable pull-ups and input thresholds with a range of 0 to +10 volts. Open-drain drivers can sink up to 200 milliamps and withstand up to +40 volts. Drivers include flyback clamps, which conduct at +45 volts nominally, to allow low-side drive of relay coils from up to 36 volts. Each channel has a programmable digital debounce with delays of 1 millisecond, 10 milliseconds, and 100 milliseconds.
FUNCTION | 64-channel digital input/output module |
DEVICE TYPE | 16-bit VME register-based slave: A24:A16:D16; Implements 256 16-bit registers at switch selectable addresses in the VME 16 or 24 bit addressing spaces |
OPEN-DRAIN OUTPUTS | Closure to ground, 200 mA max, 40 volts max, 2 Ω typical on resistance Internal Zener clamp outputs to +45 volts nom. (See manual section 5.4) |
LOGIC INPUTS | Inputs grouped into four banks of 16 channels. Each bank has programmable threshold of 0 to +10V Nominal 200KΩ impedance to ground, 40V max, 100 µs time constant hardware filtering |
PULL-UPS | 1 KΩ, each bank has programmable pull-up voltage of 0 to +10 V |
DIGITAL DEBOUNCE | Programmable per channel: off, 1 ms, 10 ms, 100 ms |
OPERATING TEMPERATURE | 0 to 60°C; extended MIL/COTS ranges available |
STORAGE TEMPERATURE | -40 to 70°C |
CALIBRATION INTERVAL | Two years |
POWER | Standard VME supplies: + 5 volts, 0.8 amp. max + 12 volts, 0.75 amp. max - 12 volts, 0.75 amp max |
CONNECTORS | P1 VME connector Two 68-pin SCSI females, each 32 channels |
INDICATORS | LEDs indicate VME access, CPU activity, error conditions Additional LED is user programmable |
CONFORMANCE | ANSI/VITA 1-1994 (R2002) VMEbus spec |
V250-1: 64-channel VME digital input/output module