VISTEK V1679 single-mode fibre
data transceiver
16
Issue 1
4.2
Configuration Options
The following illustration shows the position and meaning of all COM1 and COM2 related configuration
Jumpers:
Slew-rate selection
Jumper
RS-232/422
Transceiver
S
lo
w
C
O
M
1
F
a
st
R
S
2
32
R
S
4
22
RS-232/422
Transceiver
S
lo
w
C
O
M
2
F
a
st
R
S
2
32
R
S
4
22
Term
Term
RS422 only!
RS-232/422 selection
Jumper
120Ohm Termination
Jumper
COM2 example shown:
Mode:
RS-422
Slew-rate:
Fast
Termination:
On
Important:
The 120Ohm Termination Jumper must not be installed when operating the serial ports in the RS-232 mode!
Figure 8 : Serial Comms Port Configuration