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參數(shù)資料
| 型號： | BUS-65164-180K |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CDFP70 |
| 封裝： | 1.900 X 1 INCH, 0.215 INCH HEIGHT, FP-70 |
| 文件頁數(shù)： | 27/40頁 |
| 文件大?。?/td> | 349K |
| 代理商： | BUS-65164-180K |
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despite the fact that the MIL-STD-1553B requirement is for it to
be measured looking directly in from the bus side of the isolation
transformer.
The effect of a relatively long stub cable will be to reduce the
measured impedance. In order to keep the impedance above the
required level of 1000 ohms (for transformer-coupled stubs), the
length of any cable between the 1553 RT and the system con-
nector should be minimized.
“SIMULATED BUS” (LAB BENCH) INTERCONNECTIONS
For purposes of software development and system integration, it is gen-
erally not necessary to integrate the required couplers, terminators, etc.,
that comprise a complete MIL-STD-1553B bus. In most instances, a sim-
plified electrical configuration will suffice. The three connection methods
illustrated in FIGURE 20 allow the STIC to be interfaced over a simulat-
ed bus to simulation and test equipment. It is important to note that the
termination resistors indicated are necessary in order to ensure reli-
able communications between the STIC and the simulation/test equip-
ment.
33
FIGURE 20. “SIMULATED BUS” (LAB BENCH) INTERCONNECTIONS
A) DIRECT COUPLED TO DIRECT COUPLED
(B) TRANSFORMER COUPLED TO TRANSFORMER COUPLED
(C) DIRECT COUPLED TO TRANSFORMER COUPLED
1
2
3
8
7
5
4
STIC
HYBRID
TEST/
SIMULATION
EQUIPMENT
STUB
COUPLING
STUB
COUPLING
ISOLATION
TRANSFORMER
78
1.5W
(A)
1
2
3
8
4
STIC
HYBRID
TEST/
SIMULATION
EQUIPMENT
DIRECT
COUPLING
DIRECT
COUPLING
ISOLATION
TRANSFORMER
39
0.5W
(B)
55
1W
55
1W
55
55
1
2
3
8
4
STIC
HYBRID
TEST/
SIMULATION
EQUIPMENT
STUB
COUPLING
DIRECT
COUPLING
ISOLATION
TRANSFORMER
39
0.5W
(C)
55
1W
55
1W
20
0.5W
20
0.5W
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