LAST BIT
t *
f
90%
Magnified View
OUTPUT OFFSET*
16V P-P MIN
24V P-P MAX
0 Volts
0 Volts
OUTPUT OFFSET*
10%
2.5 µsec
t
*
r
*Offset measured at point A-A' in Fig 9 & 12
* Rise and fall times measured at point A-A' in Fig 9 & 12
FIGURE 5 – TRANSMITTER (TX)
OUTPUT WAVEFORM
FIGURE 6 – TRANSMITTER (TX)
OUTPUT OFFSET
5.0
4.5
4.0
3.5
2.50
2.25
2.00
1.75
MAXIMUM
1.50
3.0
MAXIMUM
2.5
1.25
1.00
2.0
1.5
0.75
TYPICAL
TYPICAL
0.50
1.0
0.5
0
0.25
0
0
10 20 30 40 50 60 70 80 90 100
DUTY CYCLE, PERCENT
0
10 20 30 40 50 60 70 80 90 100
DUTY CYCLE, PERCENT
FIGURE 7 – H009 POWER
DISSIPATION vs DUTY CYCLE
(Total hybrid with one channel
FIGURE 8 – MACAIR/1553 POWER
DISSIPATION vs DUTY CYCLE
(Total hybrid with one channel
transmitting and the other in standby)
transmitting and the other in standby)
Terminal
TRANSCEIVER
UNDER TEST
VP-P @ B - B'
30
AMP CTL
27
24
21
TX DATA OUT
C*
34
Ω
Ω
N1:N2
RX DATA IN
RX DATA OUT
A
10KΩ
Typical
18
170Ω
RX DATA OUT
TX DATA OUT
15
12
C*
A'
34
9
RX DATA IN
Slope = 3VP-P/Vdc
6
10KΩ
THRESHOLD A/ B
3
THRESHOLD A/ B
R
0
0
Vdc
R
* Cap is 0.5 - 1µF ceramic BX/X7R
1
2
3
4
5
6
7
8
9
10
Transformer turns ratio:
N1:N2 = 1:1
Recommend Technitrol 1553-1
CONTROL VOLTAGE
R is determined at system level
FIGURE 10 – TRANSMITTER (TX) OUTPUT
AMPLITUDE vs CONTROL VOLTAGE
(See Figure 12 herein)
FIGURE 9 – H009 TYPICAL TRANSFORMER
CONNECTION
SCD4462D Rev E 10/9/07
Aeroflex Plainview
7
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
