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Checking the polarity of wiring connections for gate call settings
For extension boxes with D suffixes or later for the serial number (page 92):
When configuring gate call settings when 2 or more control boxes are connected to an extension box, check the
polarity of wiring in the following way. Set DIP switch 8 to the "on" position, and set the lobby station DIP switch settings
for configuring gate call settings (page 75).
Connect the "+" side of the wire from the control box to L1 of the extension box.
Note:
R
Make connections so that L1 on the control box and L1 on the extension box are connected.
1.
After connecting to the control box side, measure the voltage of the 2 wires to be connected to the extension box
side using an electrical tester.
ロヒ
ヷペパパバ
ヷペパヒバ
ヷヘパピ
ロビ
ヒ
ロヒ
ロビ
ピ
ロヒ
ロビ
ビ
ユヒ
ヷヘパビ
ユビ
ヒ
ユヒ
ユビ
ピ
ユヒ
ユビ
ビ
Control box
Extension box
USB
DC IN
RJ11
PC
NP
TV Monitor
PBX
POWER SUPPLY UNIT
NP
NP
POWER SUPPLY UNIT
NP: Non-polarised
NP
Up to 6
Lobby station
Up to 4
Control box
L1 - L1
L2 - L2
DC IN
+ −
+ −
ロヒ
ヷヘパパバ
ヷヮヘパヒ
ヒ
ロビ
ロヒ
ビ
ロビ
ロヒ
ピ
ロビ
ロヒ
フ
ロビ
ロヒ
ロㄐㄚ
ヴㄕㄕㄊㄐㄏ
ロビ
ヒ
ロヒ
ロビ
ピ
ロヒ
ロビ
フ
ロヒ
ロビ
ブ
ロヒ
ロビ
プ
ロヒ
ロビ
ビ
ヷヒ
ヷヘパヒ
ヷビ
ヒ
モヒ
モビ
ヷヒ
ヷビ
ビ
モヒ
モビ
ヷヒ
ヷビ
ピ
モヒ
モビ
ヷヒ
ヷビ
フ
モヒ
モビ
2.
Connect extension box wires with the correct polarity as shown in the following.
If the electrical tester displays "approx. +5 V"
If the electrical tester displays "approx. –5 V"
Connection to L2 of the extension box
Connection to L1 of the extension box
−
+
−
+
+
−
−
+
Connection to L1 of the extension box
Connection to L2 of the extension box
76
5. Programming