General Specifications

Strain Gage Input(s)

Any  80 Ω to 2,kΩ transducer, directly wired or transformer coupled.  4, 6, or 7 wire circuits are accommodated.

Transducer Excitation

3Vrms, 3030 Hz ±0.01% sine wave. Regulated, and short circuit protected.

Sensitivity

0.5 to 5.0mV/V with 50% overrange; automatically scaled.

Input Impedance

100MΩ in parallel with 33pF

Automatic Null

In Phase: ±10% of F.S. (with 50% overrange), ±60% of F.S. (with 0% overrange). Quadrature: ±1mV/V.

Auto Calibration

Dual polarity shunt calibration with provision for CAL resistor feedback.

Spurious Signal Rejection

60Hz: 120dB common mode, 100dB normal mode. Carrier quadrature: 60dB.

Antialias Filter

200Hz, 7 pole Bessel response filter.

Low Pass Filtering

4 pole Bessel response digital filters with 11 cutoff frequencies from 0.1 to 200Hz in 1-2-5 steps.

Signal-to-Noise Ratio¹

with 1/10/100/200Hz filters  86/76/66/62dB @ 1mV/V F.S. and 86/80/72/66dB @ 5mV/V F.S.

Display Resolution

0.02% of F.S., worst case

Overall Accuracy
(at 77°F/25°C)

0.02% of F.S., worst case

Temperature Effects

Zero: ±0.001% of F.S./°F (max)
Span: ±0.001% of F.S./°F (max).

Position Encoder Input

Rotary and linear quadrature encoders, or TTL events.

Excitation Supplies

+12V@125mA² or +5V@250mA². short circuit (current limit) and overvoltage (fuses: 375mA for 12V, 1A for 5V) protected.

Inputs

Signal A, Signal B, Reset, Reset Arm.

Input Type

Single ended, TTL.

Input Impedance

50kΩ

±130VDC or 130Vrms.

Bandwidth

400kHz.

Operating Modes

Quadrature Encoder Mode

Counts input cycles once or doubles (2X) or quadruples (4X) the number of input pulses.  Choose A leads B or B leads A for incrementing direction of counter.

Counts edges of Signal A.  Choose Rising Edge or Falling Edge.

Via the RESET key, the Logic I/O or, the transducer connector.

Reset Via The Transducer Connector

Choose TTL Low, TTL High, or Ignore.

Choose Level, Leading Edge, /A AND /B, /A AND B, A AND /B, or A AND B.

Reset Arm Signal

Enables Reset signal (choose TTL Low, TTL High, or Ignore).

48 bits.

Display Range and Resolution

Displays 0 to 999,900 units of measure with legend; resolution is 0.01% of Full Scale.

Response Time

0.5ms.

Data Filter

Unfiltered or 4 pole Bessel response low pass digital filter. 10 Cutoff frequencies from 0.1 to 100 Hz in 1-2-5 steps.

Maximum Transducer Cable Length

500ft.

Type: 2 line by 16 alphanumeric characters, each 0.2" wide by 0.3" high. Backlit LCD with adjustable contrast.
Views: Select either 2 Channels, 1 Channel with Limit Status, or 1 Channel with I/O Status.
Data Displayed: Select from Current, Max, Min, Spread, Held data and Tare value.
Data Format: Engineering units with 6 digits (1-2-5 format) and 5 character, upper/lower case, user-entered legend/descriptor.

Response (per channel)

Data Sampling & Max/Min Update Rates: 2000Hz (hardware channels), 50Hz (CH3 calculation).
Limit Checking Rate: 1000Hz (hardware channels), 50Hz (CH3 calculation).
Logic I/O Response Time: 1ms (hardware channels), 20ms (CH3 calculation).
Update Rate for each Analog Output: 1000Hz.

Control

(All I/O functions can be OR’d in any combination. The pattern function adds ANDing capabilities.)
Input Actions/channel: Logic inputs, outputs, and internal Matrix signals control following actions. Tare, Clear Tare, Hold, Clear Hold, Reset Max/Min, Clear Latched Limits, Check Limits, Do Max/Mins, Apply +CAL, Apply -CAL.
Output Events/channel: The following events drive Logic outputs and internal Matrix signals. HI Limit, NOT HI Limit, IN Limit, NOT IN Limit, LO Limit, NOT LO Limit, At Max, NOT At Max, At Min, NOT At Min.
Eight User-defined Patterns: Patterns of Logic inputs, outputs and Matrix signals drive Logic outputs and internal Matrix signals.

State Machine Capability

User enabled/disabled.  Permits up to eight states and allows Event Driven Testing.  See AN7000 for details.

Limit Checking

Each channel has a HI and LO limit which may be latched or unlatched, absolute or signed, and with or without hysteresis. Select either Current, Max, Min, Spread or Held data for limit checking.
Limit violations on any or all channels can be set to trigger backlight flashing in any of the display view modes.

Four Logic Inputs

Each with programmable destination, protected to ±130VDC or 130Vrms.
Type: TTL compatible, Schmitt Trigger, low-true with 47kΩ pull-up. Input current is -100μA @ 0V.

Six Logic Outputs

Each with programmable source, short circuit (current and thermal limits) and overrange (fuse) protected.
Type: Open collector, low-true. Operating @ 24V (max) and 0.3A max sink current.

External +5VDC Power
(on I/O connector)

250mA, short circuit (current limit) and overvoltage (fuse) protected.

Serial Communication Port

(user selectable as RS232, RS422, or RS485.  Supports 32 devices on RS485 port and 1 device on RS232/422)
BAUD Rate: 300 to 38400. Maximum Cable Length: 4000ft (RS422/RS485), 50ft (RS232).
120Ω Termination Resistors (RS485): user selectable for RXD and TXD.
RS422/485 Transceivers: Slew-rate limited, short circuit protected (current & thermal limits).
RS232 Drivers: Short circuit protected (current limit).
Serial I/O’s: Use a 9 pin D connector. They are ±15kV ESD protected and float (100kΩ) with respect to Earth Ground.
Commands: Control of all modes, settings, and measurements.

Non-Volatile Memory Storage for System Settings

EEPROM, batteries are not used.

Dual Analog Outputs

(each assignable to any of the 3channels, are short circuit (current limit) and overvoltage (fuse) protected.)
Output Impedance/Minimum Load Resistance: <1Ω/10kΩ.
Full Scale: ±5V or ±10V (user selectable). Resolution is ±2mV @ ±5V FS or ±4mV @ ±10V FS.
Overrange: ±8.2V @ ±5V FS or ±13.5V @ ±10V FS.
Non-linearity: ±2mV @ ±5V FS or ±4mV @ ±10V FS.
Overall Error (worst case, including temperature effects): ±5mV @ ±5V FS or ±10mV @ ±10V FS.
Filter: 100Hz, 5 pole Bessel response low pass filter.
Protection: Short circuit (current limit) and overvoltage (0.25A fuse) protected.

Size and Weight

6.5" wide, 2.9" high, 8.7" deep. Weight is 3 pounds.

Operating Temperature

+41°F to +122°F (+5°C to +50°C).

Input Power

90VAC to 250VAC, 50/60Hz @ 25VA, max. Two 2A/250V fuses, line filter, and rear power switch.
Option 12D1 converts from AC line power to 10 to 15VDC operation @ 15 Watts, max.  It includes a rear power switch, fuse & filter.

Notes:

1. The ratio expressed in decibels (dB), of Full Scale to noise spread. Measurements are made for a 1 minute interval using a 100Ω source impedance.
2. Both excitation voltages can be used simultaneously with the following restrictions:  4.8 x (12V current) + (5V current) ≤ 700 mA AND 12V current ≤ 125mA AND 5V current ≤ 250mA.
3.  Option MA converts voltage output to 4-20mA or 12±8mA current output(s).  See Bulletin 389-1 for complete details.
4. Specification is subject to change without notice.