ZETRON 4000 Series, Руководство по установке

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Accessory Installation
228 025-9533Y
T2-2R Base Station Installation
There are two methods of installing a T2-2R base station in a Model 4048/4020 system:
single system channel and dual system channels.
Single System Channel
This method allocates one system channel to the T2-2R base station. The advantage of this
method is that it uses only one system channel and is easy to install. The disadvantage is
that both receivers are summed, giving only one mute button, one channel volume control,
and one call indicator.
To program the channel as a T2R2 channel, include a channel select button, an F1/F2
button (sent at Xmit) for transmit frequency selection, and (optionally) an R2 On/Off
button for second receiver muting at the base station. To enable Instant Select, use an F1-
select and an F2-select button instead of the conventional select button.
Figure 42: One System Channel
Dual System Channels
This method allocates two system channels to the T2-2R base station. The advantage of
this method is that each receiver is given its own channel and thus individual mutes,
channel volumes, and call indicators. The disadvantage is that it requires two system
channels and is more complex to install.
Base Station Dual Channel Card
2 Freq
Xmitter
1st
Rcver
2nd
Rcver
2-Wire Tx/Rx
4-Wire Rx