V360 8-channel VME tachometer

Tachometer - V360
  • Intelligent 8-channel period/frequency/RPM measurement module
  • Ideal for signal conditioning of magnetic speed pickups, flowmeters, and encoders
  • High noise immunity ensures accurate measurement in industrial environments
  • Internal signal conditioning accepts direct input from common speed sensors
  • Register-based 16-bit VME module
  • Clean, simple architecture simplifies programming
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The V360 is a single-width, 6U height VME module designed specifically to acquire low frequency inputs from industrial speed sensors. The module can measure frequency and period over a wide dynamic range, and is specifically designed to ensure reliable measurement in high-noise industrial environments.

Differential signal inputs are signal conditioned, filtered and presented to the inputs of a custom gate array chip which manages period and frequency measurement. An on-board microprocessor periodically reads the timer chip, checks and scales data, and loads measured values into a dual-port memory interfaced to the VME bus.

The input signal conditioners can be connected directly to common transducer types, including:
FUNCTION 8-channel signal conditioner/tachometer module
DEVICE TYPE 16-bit VME register-based slave: A24:A16:D16:D08(EO)
Implements 32 16-bit registers at switch selectable addresses in the VME 16 or 24 bit addressing spaces
INPUTS Eight channels, numbered 0 through 7
Each channel has differential inputs, ground, and auxiliary +12 volt source
Input impedance is > 60 K to ground on differential inputs
Signal level inputs are configurable for standard TTL, open collector, AC generator, and variable reluctance sensor pickups
Onboard signal conditioning includes VME-selectable gains, filtering/integration, and trigger levels to accept 10 mV to 150 volt RMS signals up to 100 kHz
Inputs will tolerate 1000 volt transients for 50 µs
RANGE 32 bit period measurement with 20 ns LSB resolution, approximately 85 seconds maximum period
Transparent interlock logic allows skew-free reading of 32-bit period data
ACCURACY ±0.005% ±1 LSB
RS-232 PORT 9600 baud RS-232 port is provided
This provides for monitoring of module performance and permits channel configuration without requiring host CPU programming
OPERATING TEMPERATURE 0 to 60°C; MIL/COTS ranges available
POWER Standard VME supplies:
+5 V: 0.5 A
+12 V: 0.2 A
-12 V: 0.15 A
CONNECTORS D37 female connector for signal inputs and current-limited +12 volt excitation outputs
D9 female connector for RS-232 serial port
Two BNC signal monitor connectors present analog and digital signal levels of any selected channel
INDICATORS Ten LEDs indicate processor heartbeat, VME access, and individual channel trigger activity
PACKAGING 6U single-wide VME module
CONFORMANCE VMEbus per ANSI/VITA 1-1994 (R2002)

PDF Block Diagram: V360 tachometer

PDF Datasheet: V360 tachometer

PDF Manual: V360 tachometer

V360-1: 8-channel VME tachometer

J43: 3' BNC to BNC cable