IF10
8 - Setting the switches
The DIL switch sets the level and characteristics of inputs and outputs.
0=OFF
1=ON
DIL switch settings
8 7 6 5 4 3 2 1
0
Output 1: TTL / RS-422 The output levels are
5V with TTL setting
while correspond to the
power supply voltage
with HTL setting.
1
Output 1: HTL
0
Output 2: TTL / RS-422
1
Output 2: HTL
0
(0)
0
(B)
0
(A)
Input 1: differential
(A, /A, B, /B, 0, /0)
Both input and
inverted input must be
used. Levels from 2 to
30V are acceptable.
1
(0)
1
(B)
1
(A)
Input 1: single-ended
(A,B,0) with HTL level *
Inverted inputs remain
open, level must be HTL
10-30V.
0
(0)
0
(B)
0
(A)
Input 2: differential
(A, /A, B, /B, 0, /0)
Both input and
inverted input must be
used. Levels from 2 to
30V are acceptable.
1
(0)
1
(B)
1
(A)
Input 2: single-ended
(A, B, 0) with HTL level *
Inverted inputs remain
open, level must be HTL
10-30 volts.
*) This setting can be used also with asymmetric (single-ended) TTL levels. See
the “5.4 Asymmetric TTL Inputs” section on page 21.
NOTE
Please always set unused input lines to “single-ended” HTL!
NOTE
It is not mandatory to use the same level for all channels of an input. The
indications (A), (B), (0) show which switch position affects which channel.
MAN IF10 I_E 1.1.odt
8 - Setting the switches
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