Table 4-17 defines the de – CANOGA PERKINS 2240 Fiber Optic Modem User Manual
Page 70
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Chapter 4 Data Interfaces
2240 Fiber Optic Modem User Manual
Programmable Buffered Interface/Model P53
70
Figure 4-6 Board Layout for Programmable Buffered Interface
Table 4-17. Delay Times for Programmable Buffered Interface
SW1 Position
(O)pen (C)losed
Delay Time
P53
1
2
3
4
C
C
C
C**
20 ns
O
C
C
C
30 ns
C
O
C
C
40 ns
O
O
C
C
50 ns
C
C
O
C
60 ns
O
C
O
C
70 ns
C
O
O
C
80 ns
O
O
O
C
90 ns
C
C
C
O
100 ns
O
C
C
O
110 ns
C
O
C
O
120 ns
O
O
C
O
130 ns
C
C
O
O
140 ns
O
C
O
O
150 ns
C
O
O
O
160 ns
O
O
O
O
170 ns
** Default setting as shipped
W8
W9
W7
W14 W13 W12
-6V +/-6V +6V
100 ohm
CHASSIS GND
W2
W1
SHORT
J3
RSTBIAS
OFF ON
KG
NORM
W18 W17
W6
W5
W19 W20
Test
GND
DSR
W16
W15
Dl1
Sw1
W10
W11
INVERT
NORM
KG OUT
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