Terminal
TRANSCEIVER
UNDER TEST
TX DATA OUT
RX DATA IN
RX DATA OUT
RX DATA OUT
Isolation
Transformer
1:N
Coupling
Transformer
1 : 1.414
R
Zo
B
Isolation
Resistors
R = 0.75 Z
O
A
B'
TX DATA OUT
RX DATA IN
R
Data
Bus
Wire
Pair
A'
Zo
Transformer turns ratio:
N = 0.707
Recommend Technitrol 1553-1
Terminal Input Impedance B – B'
MIL-STD-1553B para 4.5.2.1.2.3
1K
Ω
minimum. 75KHz – 1MHz
Figure 3 –
Databus Interface Using Transformer Coupling
(Figure
9, MIL-STD-1553B)
Terminal
TRANSCEIVER
UNDER TEST
TX DATA OUT
RX DATA IN
RX DATA OUT
RX DATA OUT
Isolation
Transformer
1:N
55Ω
Zo
B
A
B'
TX DATA OUT
RX DATA IN
55Ω
Data
Bus
Wire
Pair
A'
Zo
Transformer turns ratio:
N=1
Recommend Technitrol 1553-1
Terminal Input Impedance B – B'
MIL-STD-1553B para 4.5.2.2.2.3
2K
Ω
minimum. 75KHz – 1MHz
Figure 4 –
Databus Interface Using Direct Coupling
(Figure
10, MIL-STD-1553B)
Aeroflex Circuit Technology
6
SCD4808 REV E 12/9/99
Plainview NY (516) 694-6700
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
