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Data Device Corporation
www.ddc-web.com
BU-65178/65179*/61688*/61689*
K-04/05-0
INTERFACE TO MIL-STD-1553 BUS
FIGURE 5 illustrates the interface between the various versions
of the Mini-ACE and a MIL-STD-1553 bus. Connections for both
direct (short stub) and transformer (long stub) coupling, as well
as the nominal peak-to-peak voltage levels at various points
(when transmitting), are indicated in the diagram.
Mini-ACE
DATA
BUS
Z
0
55
Ω
55
Ω
TX/RX
TX/RX
(1:2.5)
11.2 Vpp
28 Vpp
1 FT MAX
Z
0
(1:1.79)
11.2 Vpp
20 Vpp
(1:1.41)
COUPLING
TRANSFORMER
0.75 Z
0
0.75 Z
0
LONG STUB
(TRANSFORMER
COUPLED)
20 FT MAX
28 Vpp
SHORT STUB
(DIRECT COUPLED)
OR
NOTES: 1. Z
0 =
70 TO 85 OHMS
ISOLATION
TRANSFORMER
ISOLATION
TRANSFORMER
7 Vpp
7 Vpp
2. NOMINAL VOLTAGE
LEVELS SHOWN
Mini-ACE
FIGURE 5. MINIATURE ADVANCED COMMUNICATIONS ENGINE INTERFACE TO MIL-STD-1553 BUS