Highland V385 VME Strain Gage/Load Cell

MODEL V385 VME
STRAIN GAGE/
LOAD CELL MODULE

V 385 electronic weigh module, strain gauge

Excites and measures up to eight strain gage load cells.
Separate, remotely sensed excitation supply for each channel.
24-bit ADC per channel
100 dB CMRR
Clean, logical VME bus interface is well suited to PLC-based weighing applications.
Single-width 6U VME, B-size VXI module.

The V385 is a VME/VXI compatible eight-channel strain-gage signal conditioner applicable to generic bridge-type transducer applications. The V385 adds individual remote-sensed excitation supplies to each channel, increasing its precision over the Model V380's single excitation supply.
Key to the V385's increased precision is a separate remotely-sensed excitation voltage for each channel. Now users can measure up to eight different sensors with different interface cables without the uncertainty of a single sense point for the excitation supply.

The V385's updated firmware accommodates customer requests for faster access to raw sensor data. A firmware version with weighing-specific functions is also available.

V385 VME Strain Gage / Load Cell Module Specifications

CONFORMANCE ANSI/IEEE 1014-1987 VMEbus specification. Meets VXIC Rev. 1.4. and IEEE-P1155/D3 specifications.

SIZE Single-width, 6U VME, B-size VXI module.

DEVICE TYPE Register based slave: A16:D16:D08(EO).

ADDRESSING

512-byte data block in bus A16 address range (VME short I/O space). Bus address is set by onboard dipswitch.

EXCITATION Per-channel onboard remote-sensed bridge excitation source, 5- or 10-volt switchable; 40mA max per-channel load.

INPUTS

Eight differential inputs
CMRR better than 100dB
Input impedance is 60Mohms typ.
Maximum input +-50mV (equivalent to 5mV/V excitation)

RESOLUTION One 24-bit ADC per channel

ADC One Analog Devices AD7710 24-bit ADC per channel
Default setup is G = 1, 24-bit data, 59.91 Hz sample rate.
ADCs may be user-programmed via VME commands.

SYNC A mechanism is included to synchronize the sample times of all eight ADCs.

LEDs LEDs indicate microprocessor heartbeat, VME access, and pass/fail status.

OPTIONS Other excitations, signal ranges, filtering available.
Special software functions are available.

Highland Technology V385 VME Strain Gage/Load Cell Module Data Sheet

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	Excites and measures up to eight strain gage load cells. Separate, remotely sensed excitation supply for each channel. 24-bit ADC per channel 100 dB CMRR Clean, logical VME bus interface is well suited to PLC-based weighing applications. Single-width 6U VME, B-size VXI module.
	The V385 is a VME/VXI compatible eight-channel strain-gage signal conditioner applicable to generic bridge-type transducer applications. The V385 adds individual remote-sensed excitation supplies to each channel, increasing its precision over the Model V380's single excitation supply. Key to the V385's increased precision is a separate remotely-sensed excitation voltage for each channel. Now users can measure up to eight different sensors with different interface cables without the uncertainty of a single sense point for the excitation supply. The V385's updated firmware accommodates customer requests for faster access to raw sensor data. A firmware version with weighing-specific functions is also available.

V385 VME Strain Gage / Load Cell Module Specifications
CONFORMANCE	ANSI/IEEE 1014-1987 VMEbus specification. Meets VXIC Rev. 1.4. and IEEE-P1155/D3 specifications.
SIZE	Single-width, 6U VME, B-size VXI module.
DEVICE TYPE	Register based slave: A16:D16:D08(EO).
ADDRESSING	512-byte data block in bus A16 address range (VME short I/O space). Bus address is set by onboard dipswitch.
EXCITATION	Per-channel onboard remote-sensed bridge excitation source, 5- or 10-volt switchable; 40mA max per-channel load.
INPUTS	Eight differential inputs CMRR better than 100dB Input impedance is 60Mohms typ. Maximum input +-50mV (equivalent to 5mV/V excitation)
RESOLUTION	One 24-bit ADC per channel
ADC	One Analog Devices AD7710 24-bit ADC per channel Default setup is G = 1, 24-bit data, 59.91 Hz sample rate. ADCs may be user-programmed via VME commands.
SYNC	A mechanism is included to synchronize the sample times of all eight ADCs.
LEDs	LEDs indicate microprocessor heartbeat, VME access, and pass/fail status.
OPTIONS	Other excitations, signal ranges, filtering available. Special software functions are available.



		Highland Technology V385 VME Strain Gage/Load Cell Module Data Sheet
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