USB-1208FS-PLUS datasheet(2/7 Pages) ETC

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USB-1208FS-Plus/LS/1408FS-Plus Series

Overview

Channel-Gain Queue

The channel-gain queue feature lets users configure a list of chan-

nels and gains for each scan. Each channel can have a different

gain setting. The gain settings are stored in a channel-gain queue

list that is written to local memory on the device.

• The USB-1208LS channel-gain queue list can contain up

to eight channels in SE mode and up to four channels in

DIFF mode. The channels can be listed in any order.

• The USB-1208FS-Plus/1408FS-Plus channel-gain queue can

contain up to eight unique channels in SE mode and up to

four unique channels in DIFF mode. The channels can be

non-consecutive, but must be listed in increasing order.

Analog Output

The maximum analog output update rate for all devices depends

on several factors, including USB port speed.

USB-1208LS

This device offers two 10-bit analog outputs with a range of

0 V to 5 V.

One analog output updates at a maximum rate of 100 S/s; two

analog outputs update at a maximum rate 50 S/s each. The

USB-1208LS updates in software-paced mode only.

USB-1208FS-Plus/1408FS-Plus

All devices offer two 12-bit analog outputs with a range of 0 V

to 5 V.

When updating continuously from computer

memory (hardware-paced mode), the analog outputs update at

a maximum rate of 50 kS/s per channel.

Concurrent AI/AO Scanning Operations

(-Plus devices only)

All USB-1208FS-Plus/1408FS-Plus devices support executing an

analog input scan and analog output scan at the same time.

Digital I/O

All devices provide 16 TTL-level digital I/O lines. Digital I/O can

be programmed on each 8-bit port (Port A and Port B) for either

input (default) or output.

On the USB-1208FS-Plus and USB-1408FS-Plus, port B0

through Port B7 are high-current drive (24 mA) digital I/O

connections.

Event Counter Input

Each device supports one 32-bit TTL-level counter that accepts

inputs up to 1 MHz.

External Clock I/O (-Plus devices only)

The USB-1208FS-Plus and USB-1408FS-Plus have a bidirectional

external clock terminal. When configured for input, A/D conver-

sions can be paced by an external source.

These devices support TTL-level input signals up to 50 kHz.

When configured for output, these devices can pace A/D conver-

sions on a second device.

Trigger Input

The USB-1208FS-Plus and USB-1408FS-Plus each provide an

external digital trigger input that is software-selectable for rising

or falling edge, high or low level.

The USB-1208LS provides an external digital trigger input that

is software-selectable for high or low level.

Calibration

All USB-1208FS-Plus/LS/1408FS-Plus Series devices are factory-

calibrated. Specifications are guaranteed for one year. For cali-

bration beyond one year, return the device to the factory for

recalibration.

The USB-1208LS also supports field calibration with InstaCal.

Perform calibration whenever the ambient temperature changes

by more than ±10 °C from the last calibration.

OEM Versions (-Plus devices only)

The USB-1208FS-Plus-OEM and USB-1408FS-Plus-OEM have a

board-only form factor with header connectors for OEM and

embedded applications (no case, CD, or USB cable included).

All devices can be further customized to meet customer needs.

The USB-1208FS-Plus-OEM and USB-1408FS-Plus-OEM have the

same specifications as the USB-1208FS-Plus/1408FS-Plus, but in

a board-only form factor with header connectors instead of screw

terminals.

USB-1208FS-PLUS 数据表(PDF) 2 Page - List of Unclassifed Manufacturers

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