ACE1553-3U-4 Hardware Manual
12
Physical Bus Interface with four Dual Redundant MIL-STD-1553B Channels
3.4
The Physical Bus Interface (PBI) is implemented as a daughter-board and is mounted on the
ACE1553 main board. The Physical Bus Interface (PBI) contains four dual redundant MIL-STD-
1553 channels, each channel comprises a dual-redundant transceiver, transmitter amplitude
control circuitry, a dual bus coupling transformer and the coupling relays with the MILbus
network emulation circuitry.
The MIL-STD-1553 dual trapezoidal transceivers allow for output amplitude control on primary
and secondary channel.
The MILbus coupling network of the PBI consists of sophisticated relay circuitry which offers
various coupling capabilities.
The following coupling modes (shown in Table 3.1) can be programmed via software:
Transformer coupled
Direct coupled
Transformer coupled with resistive network emulation
Isolated (Internal termination)
MILbus Coupling
Representation
MIL-BUS Isolated (Default)
No connection to the MILbus
MIL-BUS Transformer Coupled
SH
LG
/LG
/SH
IN
/IN
MIL-BUS Direct Coupled
SH
LG
/LG
/SH
IN
/IN
55R
55R
MIL-BUS Transformer Coupled with
Network Emulation
IN
/IN
SH
LG
/LG
/SH
93R
93R
9
2
,8
R
9
2
,8
R
R
in
=R
out
=69,62R
Table 3.1: Different Coupling for MILbus channels
Summary of Contents for ACE1553-3U-4
Page 2: ......
Page 6: ...ACE1553 3U 4 Hardware Manual iv THIS PAGE IS INTENTIONALLY LEFT BLANK ...
Page 24: ...ACE1553 3U 4 Hardware Manual 16 THIS PAGE IS INTENTIONALLY LEFT BLANK ...
Page 27: ...ACE1553 3U 4 Hardware Manual 19 Figure 4 2 PXI Front Panel PBI Trigger Routing capabilities ...
Page 30: ...ACE1553 3U 4 Hardware Manual 22 THIS PAGE IS INTENTIONALLY LEFT BLANK ...