About this Manual ..........................5 Conventions ................................ 5 Where to find more information ......................... 5 Chapter 1 Introducing the USB-1208HS-4AO ...................... 6 Functional block diagram ........................... 6 Chapter 2 Installing the USB-1208HS-4AO ......................7 What comes with your shipment? ........................7 Hardware ..................................
Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. Where to find more information Additional information about USB-1208HS-4AO hardware is available on our website at www.mccdaq.com. You can also contact Measurement Computing Corporation by phone, fax, or email with specific questions. Knowledgebase: kb.mccdaq.com...
The USB-1208HS-4AO is a USB 2.0 high-speed device supported under popular Microsoft Windows operating systems. The USB-1208HS-4AO is compatible with both USB 1.1 and USB 2.0 ports (although the speed of the module maybe limited when using USB 1.1 ports).
Refer to the Quick Start Guide for instructions. To connect the USB-1208HS-4AO to your system, turn your computer on, and connect the USB cable to a USB port on your computer or to an external USB hub connected to your computer. The USB cable provides power and communication to the USB-1208HS-4AO.
Installing the USB-1208HS-4AO Caution! Do not disconnect any device from the USB bus while the computer is communicating with the device, or you may lose data and/or your ability to communicate with the USB-1208HS-4AO.. If the Status LED turns off The Status LED turns off if communication is lost between the device and the computer.
FIFO buffer on the device until you stop the scan. The FIFO buffer is serviced in blocks as the data is transferred from the USB-1208HS-4AO FIFO buffer to the memory buffer on your computer.
USB-1208HS-4AO User's Guide Functional Details Screw terminals The differential mode pinout is shown in Figure 3. Figure 3. Differential mode pinout The single-ended mode pinout is shown in Figure 4. Figure 4. Single-ended mode pinout Use 16 AWG to 30 AWG for signal connections.
The USB connector provides +5 V power and communication. No external power supply is required. Activity LED The Activity LED indicates the communication status of the USB-1208HS-4AO. It blinks when data is transferred, and is off when the device is not communicating. This LED uses up to 10 mA of current and cannot be disabled.
Each channel can be software-paced at rates up to 5,000 updates per second (system-dependent), or hardware- paced at rates up to 1 MS/s. Each analog output on the USB-1208HS-4AO has a fixed ±10 V output range. The outputs default to 0 V at power up.
Each of the 16 DIO bits on the USB-1208HS-4AO has a 47 kΩ pull-up/pull-down resistor. To configure these bits for either a +5 V pull-up or a 0 V pull-down option, you must open the USB-1208HS-4AO case to access the three-pin jumper labeled W34.
USB-1208HS-4AO User's Guide Functional Details Figure 9. Location of W34 jumper (default pull-down setting shown) Figure 10. Pull-down and pull-up configurations Replace the top section of the case, and then fasten it to the bottom section with the four screws.
USB-1208HS-4AO User's Guide Functional Details Both the period and time delay ranges are 50 ns to 107.4 seconds. Figure 11. USB-1208HS-4AO PWM timer channel Trigger input TRIG connection is an external digital trigger input. The trigger mode is software selectable for: ...
Chapter 4 Specifications All specifications are subject to change without notice. Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. Analog input Table 1. Analog input specifications Parameter Condition Specification A/D converter Analog Devices AD7329 13-bit successive approximation type Input ranges Software-selectable...
Page 17
0 – 10 V (SE mode) ±3.29 typ, ±5.13 max Table 3 summarizes the noise performance for the USB-1208HS-4AO. Noise distribution is determined by gathering 50 kS with inputs tied to ground at the user connector. Samples are gathered at the maximum specified sample rate of 1 MS/s.
USB-1208HS-4AO User's Guide Specifications Analog output Table 5. Analog output specifications Parameter Condition Specification D/A converter Texas Instruments DAC7553 Number of channels 4 independent Resolution 12 bits Output range Calibrated ±10 V Uncalibrated ±10.2 V Output transient Host PC is reset, powered on, suspended, or Duration: 3 ms typ a reset command is issued to device.
USB-1208HS-4AO User's Guide Specifications Counters Table 9. Counter specifications Parameter Specification Counter terminal names CTR0, CTR1 Counter type Event counter Number of channels Schmitt trigger, 33 Ω series resistor, 47 kΩ pull-down to ground Input type Schmitt trigger hysteresis 0.4 V to 1.2 V Input high voltage 2.2 V min...
Subminiature Surface Mount Fuse. Spare fuse mounted in holder on PCB. This is the total current consumption for the USB-1208HS-4AO, including +5 V, digital output and Note 1: analog output currents (if supported). Output voltage range assumes input power is within specified limits.
Norton, MA 02766 Category: Electrical equipment for measurement, control and laboratory use. Measurement Computing Corporation declares under sole responsibility that the products USB-1208HS-4AO to which this declaration relates is in conformity with the relevant provisions of the following standards or other documents: EC EMC Directive 2004/108/EC: General Requirements, EN 61326-1:2006 (IEC 61326-1:2005).
Need help?
Do you have a question about the USB-1208HS-4AO and is the answer not in the manual?
Questions and answers