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參數(shù)資料
| 型號(hào)： | CT1698 |
| 廠商： | Aeroflex Inc. |
| 英文描述： | CT1698 MIL-STD-1397 Type E 10MHz Low Level Serial Interface |
| 中文描述： | CT1698的MIL - STD - 1397 E型10MHz的串行接口低級(jí)別 |
| 文件頁(yè)數(shù)： | 2/7頁(yè) |
| 文件大小： | 82K |
| 代理商： | CT1698 |
Aeroflex Circuit Technology
SCDCT1698 REV A 6/12/98 Plainview NY (516) 694-6700
2
Transmission
The CT1698 accepts synchronous NRZ Data in
conjunction with two clocks signals. The NRZ data
stream is then converted to Manchester code which
is transformer coupled to a 50 ohm Tri-axial cable for
transmission up to 1000 ft.
The transmitter may be placed into standby
condition. This reduces power consumption by
approximately 600mW. Power management is made
available via two standard TTL input pins. The
Receiver is always active and is not affected by the
power management circuitry.
The drive level of the transmitter may be changed
by adding external resistors to the drive pins. These
pins allow the designer to externally program the
transmitter output level from 0.7 to 2.8 Volts peak to
peak.
The transceiver is matched for 50 ohm operation
over a wide band of frequencies. This condition is
maintained with power on and off.
Reception
The CT1698 receiver section accepts a bipolar
signal which is level detected and passed to the
serial decoder. The decoder section reconstructs
the data and strips the clock from the serial stream.
An NRZ decoded data stream is then produced
synchronously with a recovered clock. The receiver
is designed to meet the MIL-STD-1397 Type E
requirements.
Electrical Requirements
The specification detailed herein encompasses a
hybrid Transceiver/Encoder-Decoder designed to
meet the requirements of the MIL-STD-1397 Type E.
The transceiver is transformer coupled to the
specified triaxial cable.
See Figure 1 for Block Diagram. Inputs and
Outputs are all Synchronous NRZ DATA STREAMS.
The transformer is internal to the package with its
use being optional.
Encoding Timing / Transmitter Specification
Symbol
Parameter / Condition
Min
Typ
Max
Unit
Encode Timing
t1
Input data set-up time
10
10
10
10
100
50
20
45
40
40
40
35
ns
ns
ns
ns
ns
ns
ns
ns
t2
Encode clock set-up time
t3
Encode envelope set-up time
t4
Encode envelope turn-off time
t5
Transmitter activation set-up time
t6
Transmitter deactivation hold-time
tw
1
20 MHz gated CK pulse width high
30
55
tw
2
Encoder shift CK pulse width high
Output Signals
Va
Output amplitude (see Figure 2)
.45
97
45
47
47
.05
.05
.7
.8
V
ns
ns
ns
ns
V/ns
V/ns
mV
mV
ns
T
Pulse period
100
103
65
65
53
.3
.3
100
30
55
Ts
Width of 1st positive half bit
Te
Width of last half bit
T/2
Half pulse period
50
Tr
Pulse rise time
Tf
Pulse fall time
Vs
Voltage overshoot
Tos
Offset Voltage 2T after last zero crossing
Tdtx
Delay from 20 MHz clock input to data output on
TXFMR secondary
Output Impedance
20
Zo
45
50
55
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CT1698FP | 制造商:AEROFLEX 制造商全稱(chēng):AEROFLEX 功能描述:CT1698 MIL-STD-1397 Type E 10MHz Low Level Serial Interface |
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