Configuration Aspects for Programmers

Appendix B

 

 

Normal Mode

ChartScan has the ability to reject noise resulting from AC line pick-up when an Average weight setting of 16 or more measurements per line cycle is used. This noise rejection factor is important, as it allows for higher accuracy. When an average weight setting of 32 or more is used, ChartScan is operating in a line cycle integration manner and can provide readings for DC voltage, AC voltage, and thermocouple-based temperatures at a rate of up to 44 channels per second. Noise filtering improves by selecting higher average weight settings; but reduces the overall response time of the unit.

You can use the following formulas to compute the amount of time needed to acquire one scan.

For 60 Hz systems:

Scan time = #channels x (#samples/channel + 12) x 520.83 µs

For 50 Hz systems:

Scan time = #channels x (#samples/channel + 12) x 625.00 µs

To use the Normal scan mode, such that noise filtering (line cycle integration) is enabled, use the M# and W# commands, or use ChartView (see Chapter 4).

Example:

M#0

‘Select

normal mode

W#16

‘Select

16 samples over which to average

Note: The number of samples in the above example could also be one of the following: 64, 128, or

256.However, using the weight of 256 will limit the number of active channels in an acquisition to 122 due to hardware constraints.

If noise resulting from AC voltage line pick-up is not a problem, you can set the system to average 1, 2, 4, or 8 line cycles per channel for faster scanning throughput (high-speed, multiple channel application). For example, if the unit is configured to take 1 sample per channel, it will scan 147 channels per second.

Note: In regard to AC voltage measurements, ChartScan only supports AC voltages having an input signal frequency which is an integer multiple of the AC line cycle. For this reason, sampling weights less than 32 can yield incorrect results.

To use the Normal scan mode for high-speed, multiple channel applications (when noise filtering is not needed) use the M# and W# commands, or use ChartView (see Chapter 4).

Example:

M#0

‘Select

normal mode

W#1

‘Select

1 sample over which to average

Note:

The number of samples in the above example could also be one of the following: 2, 4, or 8.

Reading inaccuracies can result if common mode voltages on adjacent channels are widely dissimilar. This is due to inadequate settling time at the instrumentation amplifier when the unit is scanning between channels. Settling time is defined as the time measured to a point at which a transient voltage value is within a specified percentage of the final voltage value. Settling time is usually measured in nanoseconds. To eliminate these inaccuracies, the settling time can be increase with use of the D# command as described in Appendix A,

API Command Reference.

B-4

ChartScan User’s Manual

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Image 193
Omega Vehicle Security 1400 manual Normal Mode, Scan time = #channels x #samples/channel + 12 x 520.83 µs
Page 192 Page 194

1400 specifications

The Omega Vehicle Security 1400 stands out as a premier solution for vehicle protection, offering a blend of advanced technology and user-friendly features. With the increasing rise of vehicle thefts, incorporating a robust security system has become essential for vehicle owners. The Omega 1400 aims to address these concerns effectively, ensuring peace of mind for users.

One of the key features of the Omega Vehicle Security 1400 is its sophisticated alarm system. The device is equipped with a motion sensor that activates the alarm when unauthorized movement is detected. This feature provides an added layer of protection, alerting owners to potential threats even when they are away from their vehicles. Additionally, the system comes with multiple sensors that monitor doors and trunk openings, fortifying security against tampering.

A standout component of the Omega 1400 is its remote control functionality, which allows users to arm and disarm the alarm with ease. Featuring a user-friendly remote, drivers can secure their vehicles from a distance, ensuring convenience and accessibility. The remote not only operates the alarm system but also integrates a panic button, which can be used in emergency situations to deter potential threats.

The Omega Vehicle Security 1400 is also designed with cutting-edge technology, offering compatibility with smartphone applications. This innovation enables users to monitor their vehicles in real-time, providing alerts directly to their mobile devices. Users can check the status of their vehicle, adjust settings, and receive notifications if the alarm is triggered, ensuring they are always connected to their vehicle's security.

Another remarkable characteristic of the Omega 1400 is its built-in GPS tracking capability. In the unfortunate event of a theft, the GPS feature allows vehicle owners to track the location of their vehicle, increasing the chances of recovery. This technology proves invaluable for users who prioritize the safety of their assets.

Additionally, the Omega Vehicle Security 1400 supports a robust battery backup system. This ensures that the alarm remains functional even if the vehicle's power supply is compromised. The reliability and durability of this security system make it a worthy investment for anyone looking to safeguard their vehicle.

In summary, the Omega Vehicle Security 1400 brings together advanced alarm technologies, remote access, GPS tracking, and reliable power support, creating a comprehensive security solution tailored for modern vehicle owners. Each feature has been designed with user convenience and vehicle protection in mind, making it a top choice in the vehicle security landscape.
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