7

SCD4462D Rev E 10/9/07

Aeroflex Plainview

FIGURE 5 – TRANSMITTER (TX)

FIGURE 6 – TRANSMITTER (TX)

16V P-P MIN

24V P-P MAX

90%

10%

* Rise and fall times measured at point A-A' in Fig 9 & 12

0 Volts

OUTPUT OFFSET

*

OUTPUT OFFSET

*

LAST BIT

2.5 µsec

*Offset measured at point A-A' in Fig 9 & 12

0 Volts

Magnified View

FIGURE 8 – MACAIR/1553 POWER

OUTPUT WAVEFORM

OUTPUT OFFSET

DISSIPATION vs DUTY CYCLE

0

10

20

30

40

50

60

70

80

90 100

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

DUTY CYCLE, PERCENT

MAXIMUM

CONNECTION

(Total hybrid with one channel

transmitting and the other in standby)

FIGURE 10 – TRANSMITTER (TX) OUTPUT

AMPLITUDE vs CONTROL VOLTAGE

0

1

2

3

4

5

6

7

8

9

10

CONTROL VOLTAGE

12

15

27

30

24

21

18

9

6

3

0

Typical

Vdc

FIGURE 9 – H009 TYPICAL TRANSFORMER

N1:N2

A

A'

34

Ω

34

Ω

Transformer turns ratio:

N1:N2 = 1:1

Recommend Technitrol 1553-1

10K

Ω

10K

Ω

C*

R is determined at system level

C*

RX DATA IN

TX DATA OUT

RX DATA IN

TX DATA OUT

TRANSCEIVER

UNDER TEST

RX DATA OUT

RX DATA OUT

170

Ω

Terminal

THRESHOLD A / B

THRESHOLD A / B

R

R

* Cap is 0.5 - 1µF ceramic BX/X7R

TYPICAL

FIGURE 7 – H009 POWER

DISSIPATION vs DUTY CYCLE

0

10

20

30

40

50

60

70

80

90 100

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

0

DUTY CYCLE, PERCENT

MAXIMUM

(Total hybrid with one channel

transmitting and the other in standby)

2.25

TYPICAL

2.50

4.5

5.0

AMP CTL

(See Figure 12 herein)