Modems

DVST Installation Guide

No Dialtone

In some cases the MODEM will not recognise the prescence of a dial tone from the exchange. The following codes will allow blind dialling and if these are needed permanently they should be followed by:

User=ATX3*BDO&Y1&W1 Where

ATX3 is Dial blind without presence of dial tone *BD0 Wait two seconds before dialling

&W1 Store above settings in option 1 &W1 Power up using these settings

Note: This feature is country specific and may not be available in some versions of the MODEM’s software. Please refer to the literature supplied with your MODEM.

Transmission speed

The MODEM can be a little ambitious in setting the line speed. It is likely that a link will be established at a higher speed than the line can support without an unacceptable level of errors.

In these cases it may be necessary to limit the speed of transmission until a reliable point is reached.

Maximum line speed may be set by the command:

AT*MXn

where the value for n equals following baud rate applies:

13=28800

12=26400

11=24000

10=21600

9=19,200

8=16,800

7=14,400

6=12,000

5=9,600

4=7,200

3=4,800

2=2,400

1=1,200

0=300

To limit the speed of transmission to 14,400 use AT*MX7. This could be stored in the USER= string.

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Guardian Technologies DVST, DFT 150/175 manual No Dialtone, Transmission speed, User=ATX3*BDO&Y1&W1 Where, AT*MXn

DVST, DFT 150/175 specifications

Guardian Technologies has made significant strides in the air purification industry with its innovative DFT 150 and DFT 175 models, designed to enhance indoor air quality for both residential and commercial spaces. These advanced devices leverage cutting-edge technology to deliver clean, fresh air, addressing the increasing need for effective air purification solutions.

One of the standout features of the DFT series is its multi-stage filtration system. Both the DFT 150 and DFT 175 are equipped with a pre-filter that captures large particles, such as dust and hair, followed by a true HEPA filter. This HEPA filter is capable of capturing 99.97% of airborne pollutants as small as 0.3 microns, including allergens, mold spores, and pet dander. This is an essential feature for individuals suffering from allergies or respiratory issues, ensuring that the air they breathe is significantly cleaner.

In addition to the HEPA filtration, Guardian Technologies has incorporated a UV-C light that works in tandem with the filter system. This technology helps to kill airborne bacteria and viruses, providing an extra layer of protection against pathogens, which is particularly crucial in today’s health-conscious environment.

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Moreover, the DFT models come equipped with easy-to-replace filter indicators, notifying users when it’s time to replace the filters. This convenience promotes consistent air quality management without the hassle of manual reminders.

In conclusion, Guardian Technologies' DFT 150 and DFT 175 models represent an excellent investment for anyone looking to improve indoor air quality. Their sophisticated filtration technology, additional UV-C features, energy efficiency, and user-friendly design make them a top choice for air purifiers in the market today.