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Page 158 of 188
Figure 39
ISL settings
Jumpers for port J1,
the async port.
The port is always the
lower, even number.
Jumpers for port J2,
the D-channel port.
The port is always the
higher, odd number.
553-2901-200
Standard 11.00
ISL installation for all systems
DCE
DTE
DCE
DTE
DCE
DTE
DCE
DTE
Meridian SL-1 I/O Port Selection:
Port Address Switch Settings
Port Number
Switch 1
J1
J2
0
1
Off
2
3
Off
4
5
Off
6
7
Off
8
9
On
10
11
On
12
13
On
14
15
On
August 1996
QPC757C DCHI
1234
on
| | | |
jumper
RS-232
HS (RS-422)
RS-232
HS (RS-422)
Place jumper plugs in
RS-232
sockets as shown.
HS (RS-422)
This selects the DTE
and RS-232 options
RS-232
required for the
HS (RS-422)
D-channel.
Switch 2
Switch 3
Off
Off
On
On
Off
Off
On
On
on
Switch 4
Off
Off
On
Off
Off
Off
On
Off
Off
Off
On
Off
Off
Off
On
Off
553-1509
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