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Sensoray Model 118 Smart A/D™ Instruction Manual 35 Specifications

9 Specifications

9.1 General Specifications

Table 8: General Specifications

Category Parameter Condition Specification

Power Quiescent +5VDC, ±5% 100mA, typical.

+12VDC, ±5% 35mA, typical.

-12VDC, ±5% 35mA, typical.

Temperatur

Operating range Guaranteed

accuracy

-25°C to +85°C

Sense

inputs

CMRR CMV < 5V, f < 1KHz 80dB, minimum

CMV Guaranteed

accuracy

±5.0V, maximum

Input impedance SCC disabled 1000 MΩ, minimum

SCC enabled 1 MΩ, typical

Input protection Continuous ±20V CMV, maximum

2 seconds, max. ±70V CMV, maximum

A/D

converter

Type Integrating, 16-bit resolution.

Measurement

period,

per channel

60Hz reject mode

(default mode)

16.7 milliseconds, typical (default mode).

4.0 milliseconds, typical (high-speed

mode).

50Hz reject mode 20 milliseconds, typical (default mode).

4.8 milliseconds, typical (high-speed

mode).

Total time slot,

per channel

60Hz reject mode

(default mode)

22 milliseconds, maximum (default mode).

9 milliseconds, maximum (high-speed mode).

50Hz reject mode 25.3 milliseconds, maximum (default mode).

11 milliseconds, maximum (high-speed mode).

Excitation

source

Pulse width Applied for duration of channel time slot.

Type Strain/pressure

gage

10VDC, 40mA maximum.

400Ω/3KΩ ranges 1.2mADC.

600KΩ range 5VDC in series with 4KΩ.

Bus

interface

Type DTB slave, A16, D8

Address

requirements

Range One 256-byte address block starting on any

256-byte address boundary.

Address Modifiers Enabled by AM Codes 29 (short nonpriveleged

access) and 2D (short supervisory access).

May be customized by changing one PLD on the

board.

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