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INSTALLATION
VORTEX EF2280 Reference Manual 10 Technical Support: 800.932.2774
5. Connect another Cat-5 cable between the EF BUS OUT of the second device and
the EF B
US IN of the third device, and so on.
6. Terminate the chain of EF2280s using the instructions below.
7. Power on all units at the same time
Terminating the
EF2280
The EF2280 must be terminated with the provided EF Bus terminator. Place a termi-
nator in the EF B
US IN of the first device in the chain and also in the EF BUS OUT of
the last device. If you lose the terminator provided with your EF2280 unit, see “Mak-
ing an EF Bus Terminator” on page 50 for information and instructions on how to
make one.
The EF2280 does not have to be terminated if you are using a single unit not con-
nected together with another EF2280.
Connecting the
EF2280 with Other
EF Devices
If you are linking multiple EF2280s, you must use the EF bus to link the EF2280s to
each other. If you are linking a EF2280 to other EF devices, such as the EF200 Phone
Figure 7. Connecting and terminating multiple EF2280s.
...
EF Bus Terminator
EF Bus Terminator
Cat-5 cable
Cat-5 cable
Cat-5 cable
12


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