Data Delivery Devices VHF, UHF & ISM Wireless RTU RFScada 8ADI-9DO 4ADI-5DO User Manual

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 111 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Sample Questions and Applications. 
 
900 MHz vs. 2.4 GHz  
It seems that everywhere you look another ‘spread spectrum’ 2.4GHz devices comes out, 
including cordless phones, local wireless computer networks for homes and offices, video 
cameras, video links, toys etc. Isn’t the very popular 2.4GHz frequency band the way to go, 
almost all low cost...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 112 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
available (-SS), where each RFScada unit may be visible from the other and using the 
internal antennas supplied with the standard product a range of at least two miles is to be 
expected, and five miles is usually possible. A similar ‘line of sight’ installation, using the 
optional 13 dB gain Yagi antennas at each end should produce a range of 25 miles...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 113 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
insure that the output data is valid. If any unit fails for any reason then all outputs change on 
all units to the default (off) state within a few seconds, the default setting is 10 seconds but it 
is user programmable for each unit.       
 
 
Functional Integrity and Verification 
We want to replace some competitors units that have poor range and...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 114 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Each system of up to 32 units are matched together for transmission and reception. There 
are seven sets of identity that the units may have, so up to seven pairs of units may all 
operate in close proximity so long as they all have different id’s. When supplied the standard 
units are configured for set ‘0’, but they can be configured at the factory for...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 115 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
the office. When the office personnel have verified the guest’s identity they may operate the 
gate from the office. 
Rather than having guests press a button by the gate another option is to use a 
motion/proximity detector or ‘breaking beam’ type detector ahead of the gate connected to 
digital input one. This detector could be situated a short distance...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 116 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
normally required. Some solar panels have the charge controller already built in, if that type 
of panel is used another controller is not needed.  
The components required will vary depending on the location, for example Alaska in 
winter has very little daylight available, so a solar system there would need much greater 
capacity than one located in...