Computational Equation; Finding The Wiring Loss; Finding The Wiring Voltage Drop - Toa TS-800 Series Operating Instructions Manual

15.2. Computational Equation

15.2.1. Finding the wiring loss

Requirement: Total loss
Cable loss = (Length / 100) x Loss per 100 m
Total loss = Cable 1 loss + Cable 2 loss + Cable 3 loss + Distributor 1 loss + Distributor 2 loss
Central Unit
Coaxial cable 1 loss

15.2.2. Finding the wiring voltage drop

Requirement: Total voltage drop
Cable voltage drop = (Length / 100) x Loop resistance per 100 m x Current
Cable current
Total voltage drop = Voltage drop 1 + Voltage drop 2 + Voltage drop 3
Central unit
Note: For the coaxial cable required to carry a large current, use a cable of low loop resistance type.
[Finding the cable current]
Cable current = Number of the connected Infrared Transmitter/Receiver units x 0.1 (TS-905) or 0.13 (TS-907)
The cable current changes when the Distributor is used, as shown below.
Central unit
0.1 A
46
20 dB
Distributor 1
Coaxial cable 1
5 V
= Number of the connected Infrared Transmitter/Receiver units x 0.1 (TS-905) or 0.13 (TS-907)
Distributor
Coaxial cable 1
Current 1
Voltage drop 1
Infrared
Transmitter/Receiver
unit TS-905
Distributor 2
Coaxial cable 2
Coaxial cable 2 loss
Distributor
Coaxial cable 2
Current 2
Voltage drop 2
Central unit
0.2 A
Transmitter/Receiver
Coaxial cable 3
Coaxial cable 3 loss
Transmitter/Receiver
Coaxial cable 3
Current 3
Voltage drop 3
Infrared
Transmitter/Receiver
Distributor1
units TS-905
0.1 A
0.1 A
unit
unit