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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 1/6頁(yè) |
| 文件大小： | 185K |
| 代理商： | DSC-544-I-1-R |
DS C-544
14-BIT DIGITAL-T O-S Y NCHRO CONV ERT ER
HIGH EFFICIENCY: POWERED FROM
REFERENCE INPUT
DESCRIPTION
The
(D/S) converter compliments DDC’s
low profile DSC-644 industry stan-
dard by providing additional features.
The DSC-544 has a 0.82” high profile
and standard pinouts. The need for
+15 V and -15 V power supplies has
been eliminated. The unit is powered
from the reference input by an inter-
nal pulsating power supply, making it
very efficient. The reduced heat dis-
sipation has made it possible to
increase the load at 400 Hz by a fac-
tor of three, and the power output at
60 Hz is limited only by the size of the
internal power transformer.
DSC-544
digital-to-synchro
The DSC-544 also retains the many
improved features of the DSC-644.
The output is fully protected against
overloads, transients from load kick-
backs, short circuits and overheating.
An aluminum top plate in the module
improves thermal dissipation. In addi-
tion, the circuit design provides a
smoother, more accurate output with
improved transient response and neg-
ligible scale factor variation.
APPLICATIONS
The DSC-544 is the preferred D/S con-
verter when its special features are
required: elimination of external ±15 V
power supplies, elimination of an exter-
nal transformer at 60 Hz, greater drive
capability at 400 Hz, and less heat dis-
sipation. The converter can be used in
many applications where digitized shaft
angle data must be converted to syn-
chro form to drive control transformers,
control differential transmitters, and
angle indicators. Because these con-
verters are very rugged, and meet the
requirements of MIL-STD-202, they are
suitable for the most severe industrial
and military applications, including mili-
tary ground support and avionics. They
are very useful in computer-based sys-
tems where digital-to-synchro informa-
tion is used, such as simulators, flight
trainers, flight instrumentation, and fire
control systems.
FEATURES
Power Dissipation Cut In Half:
- 4.5 VA at 400 Hz Dissipates 6 W
- 1.5 VA at 60 Hz Dissipates 3 W
No External +15 V or -15 Supplies
Required
No External Transformer Required
at 60 Hz
Reliable:
- Rugged Power Amplifiers with
Current Limiting
- Short Circuit Protection
- Overvoltage Transient
Protection
- Thermal Cutoff
Digital Input:
- CMOS and TTL Compatible
- Parallel Binary Angle Input
Output:
- Transformer-Isolated
- 90 V Synchro Output at 400 Hz
and 60 Hz
OUTPUT ISOLATION
SECTION
PULSATING
POWER
SUPPLY
S1
S2
S3
SYNCHRO
OUTPUT
OUTPUT
POWER
AMPLIFIERS
S
C
OUTPUT
ISOLATION
TRANS-
FORMER
SIN
COS
DIGITAL
TO
RESOLVER
CONVERTER
D/R POWER
SUPPLY
REFERENCE
TRANS-
FORMER
POWER
TRANS-
FORMER
RH
RL
RH
REFERENCE
INPUT
RL
REF INPUT ISOLATION
SECTION
DIGITAL
INPUT
BIT 1
BIT 14
MSB
LSB
+5V
GND
1981, 1999 Data Device Corporation
FIGURE 1. DSC-544 BLOCK DIAGRAM
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