Toa IR-700D - Manual (Page 8)

8
8. WIRING TO INFRARED WIRELESS RECEIVER
8.1. Wiring Precautions
When multiple infrared wireless receivers have received an infrared signal from the infrared wireless
microphone, the reception level increases if the signals input to each receiver are in phase with each other.
However, the reception level could decrease if the signals are out of phase.
• To match signal phases, make each corresponding cable the following length:
Cable length from each infrared wireless receiver to the IR-700D : M1 + N1 = M2 + N2
where M1, N1, M2, and N2 are:
M1: Length between Infrared wireless receiver (A or A’) and YW-1022/1024 Distributor (1)
N1: Length between YW-1022/1024 Distributor (1) and IR-700D
M2: Length between Infrared wireless receiver (B or B’) and YW-1022/1024 Distributor (2)
N2: Length between YW-1022/1024 Distributor (2) and IR-700D
8.2. When Using the Distributor YW-1022/1024
• The YW-1022 is a 2-branch distributor and the YW-1024 is a 4-branch distributor.
• Some idle YW-1024 distribution terminals may result, depending on wiring, however this presents no
problem.
• Avoid connecting 2 or more distributors in series. Connecting them in series increases high-frequency signal
loss, potentially resulting in system malfunctions.
• Assure that all infrared wireless receivers within the same system are connected through the same type of
Distributor. If different types of Distributors are mixed together, or if there are connections both through and
around the Distributor, this can narrow the coverage area.
• The maximum cable length between each Infrared Wireless Receiver and IR-700D differs depending on the
type of coaxial cable to be used.
Take care not to exceed the maximum cable length. (Refer to p. 10 "Supplementary Remarks.")
N1 N2
Distributor (1)
YW-1022/1024
Distributor (2)
YW-1022/1024
BNC plug-to-BNC plug cord (supplied with the IR-700D)
M1 M2 M2 M1
Infrared wireless receiver
(B)
Infrared wireless receiver
(A)
Infrared wireless receiver
(A’)
Infrared wireless receiver
(B’)
Infrared wireless tuner
Infrared wireless distributor
IR-700D
Note
When using the YW-1022 or YW-1024
Distributors, be sure to connect the same
type of distributor to the IR-700D’s
receiver mixing inputs 1 – 4. No problems
should result even if a different number of
infrared receivers are connected to each
YW-1022/1024.