General Specifications

Voltage Input

May be used either differentially or single ended.

Sensitivity

±1V to ±10V. Maximum allowable (no damage) input is ±130VDC or 130Vrms.

Overrange Capability

50% of full scale.

Zero Control Range

±10% of full scale (F.S.) with 50% overrange and ±60% of full scale with 0% overrange.

Input Impedance

2MΩ differential, 1MΩ single ended.

Calibration

Dual polarity calibration with engineering unit scaling.

Antialias Filter

5 pole Bessel response filter.

Low Pass Filtering

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

Signal-to-Noise Ratio

with 1/10/100/200Hz filters 86/80/72/66dB.

Common Mode Rejection Ratio

>80dB DC to 10MHz.

Resolution

0.01% of F.S.

Overall Accuracy (at 77°F/25°C)

0.01% of full scale typical, 0.02% of full scale, worst case.

Temperature Effects

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

Maximum Cable Length

2,000ft.

System Display

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 user-entered legend/descriptor.

System Response

(per channel)

(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.

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.

(each with programmable function -- destination)

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

(each with programmable function -- source)

Type: Open collector, low-true. Operating @ 24V (max) and 0.3A max sink current.
Protection: Short circuit (current and thermal limits) and overvoltage (0.5A fuse).

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

(user selectable as RS232, RS422, or RS485)

BAUD Rate: 300 to 38400. Maximum Cable Length: 4000ft (RS422/RS485), 50ft (RS232).
Maximum Number of Devices: 32 (RS485), 1 (RS232/422).
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.

EEPROM, batteries are not used.

(on I/O connector) 250mA, short circuit (current limit) and overvoltage (1A fuse) protected.

(each assignable to any of the displayed channels)

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.

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

+41°F to +122°F (+5°C to +50°C).

90VAC to 250VAC, 50/60Hz @ 25VA, max. Two 2A/250V fuses, line filter, and rear power switch.

1. The ratio expressed in decibels (dB), of Full Scale to noise spread. Measurements are made for a 1 minute interval using a 350Ω bridge.

2. Both excitation voltages can be used simultaneously with the following restrictions: 6 x (15V current) + (5V Current) ≤ 700 mA AND 15V current ≤ 100 mA AND 5V current ≤ 250 mA. The Model 733 has two pairs of these supplies.

3. Specification is subject to change without notice.