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參數(shù)資料
| 型號： | DSC-544-I-1-R |
| 英文描述： | Digital-to-Synchro Converter |
| 中文描述： | 數(shù)字到同步器 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 185K |
| 代理商： | DSC-544-I-1-R |
ACCURACY TESTS
The accuracy of the DSC-544 may be tested with a high accura-
cy synchro/resolver angle indicator and a load such as a control
transformer (see FIGURE 6). The bits switched are set to the
desired angle and the output angle is measured under load. The
accuracy should conform to the specifications.
4
TABLE 3 lists the load impedance of some typical control trans-
formers. Control transformers are highly inductive loads and it is
possible to save power by tuning inductive loads. Three capaci-
tors may be placed across the legs of the synchro stator in a
delta configuration as shown in FIGURE 5.
26V 08CT4c
26V 11CT4d
11CT4e
15CT4c
15CT6b
18CT4c
18CT6b
23CT4a
23CT6a
08
11
11
15
15
18
18
23
23
MILITARY
PART NUMBER
ZSO
SIZE
100 + j490
21 + j132
838 + j4955
1600 + j9300
1170 + j6780
1420 + j13260
1680 + j5040
1460 + j11050
1250 + j3980
TABLE 3. TYPICAL CONTROL TRANSFORMERS
AND THEIR LOAD IMPEDANCES
S1
S2
S3
C
C
C
FIGURE 5. DELTA TUNING CONFIGURATION
The correct value of the capacitance C in Farads is given by:
where f is the carrier frequency and R and XLare the series real
and reactive components of Zso. High grade capacitors must be
used and they must be able to withstand the full AC output volt-
age.
When the load has been tuned more loads can be driven in par-
allel, the load impedance Z is increased to :
R2 + XL2
R
C =
Z =
XL
4
π
fR2 + XL2
MSB
REFERENCE
LSB
BIT 1
BIT 14
DSC-544
SYNCHRO OR
RESOLVER
SIGNALS
CT LOAD
S/R ANGLE
INDICATOR
AP-30711
FIGURE 6. ACCURACY TEST CIRCUIT
TABLE 4. MIL-STD-202E TEST METHODS
METHOD
204C
213B
106D*
107D
101D
105C
CONDITION
C
A
--
A
B
B
COMMENT
10G, 2000 Hz vibration
50G, 11 ms shock
Moisture
Thermal shock
Salt spray
50,000 ft, altitude
* when conformally coated on P.C. board
TEST METHODS
The DSC-544 converter modules are high-quality products
whose semiconductor components are hermetically sealed.
These modules will meet the specific test methods and condi-
tions of MIL-STD-202E (see TABLE 4) unless alternative meth-
ods are specified by the customer in his procurement documen-
tation.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| DSC544I3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Converter IC |
| DSC-544-I-3-R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital-to-Synchro Converter |
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