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參數(shù)資料
| 型號(hào)： | LDM2485B-P |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Signal Powered High Speed RS-232 to RS-485 Converters |
| 中文描述： | 支持高速信號(hào)的RS - 232到RS - 485轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 1/1頁(yè) |
| 文件大?。?/td> | 66K |
| 代理商： | LDM2485B-P |
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Ordering Information
LDM2485A-P
LDM2485A-S
LDM2485A-PJ1
LDM2485A-SJ1
LDM2485A-PJ4
LDM2485A-SJ4
LDM2485A-P25S
LDM2485A-S25S
LDM2485B-P
LDM2485B-S
LDM2485B-PJ1
LDM2485B-SJ1
LDM2485B-PJ4
LDM2485B-SJ4
Male DB-25 w/termnal block
Female DB-25 w/termnal block
Male DB-25 w/RJ-11 jack
Female DB-25 w/RJ-11 jack
Male DB-25 w/RJ-45 jack
Female DB-25 w/RJ-45 jack
Male DB-25 w/female DB-25
Female DB-25 w/female DB-25
Male DB-9 w/termnal block
Female DB-9 w/ termnal block
Male DB-9 w/RJ-11 jack
Female DB-9 w/RJ-11 jack
Male DB-9 w/RJ-45 jack
Female DB-9 w/RJ-45 jack
Features
á
AVAILABLE WITH DB-25 (RS-232) OR
DB-9 (EIA-574) INTERFACE
á
CONFORMS TO THE EIA RS-485 STANDARD
á
OPERATES ASYNCHRONOUSLY POINT-TO-
POINT OR MULTIPOINT, OVER 2 OR 4 WIRES
á
UP TO 50 TERMINAL DROPS IN A MULTIPOINT
POLLING ENVIRONMENT
á
DATA RATES TO 115,200 BPS
á
RANGE UP TO 9.0 MI (14.5 KM)
á
DATA PLUS ONE CONTROL SIGNAL PASSED IN
EACH DIRECTION
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SELECTABLE RTS-CTS DELAY
á
ABLE TO OPERATE WITH OR WITHOUT “ECHO”
á
CARRIER MAY BE CONTINUOUS OR
“CONTROLLED BY RTS”
á
NO AC POWER OR BATTERIES REQUIRED
á
600 WATTS OF SILICON AVALANCHE DIODE
SURGE PROTECTION –STANDARD
LDM2485A and
LDM2485B
Signal Powered High Speed
RS-232 to RS-485 Converters
Dataforths Model LDM2485A & LDM2485B high speed, RS-232 to RS-
485 interface converters can turn your PC, termnal or other RS-232 device
into an RS-485 workstation. Operating over 2 to 4 wires, at data rates up to
115.2 kbps, Models LDM2485A & LDM2485B let your RS-232 machine talk
wth up to 50 addressable devices in a multipoint polling environment. Since
multipoint environments can be difficult to work wth, these products have
five separate configuration parameters (carrier control, RTS/CTS delay,
receive impedance, transmt-off impedance and echo) that allowyou to fine
tune the converters to your particular application. And to keep your application
up and running, both models have built in surge protection. The Model
LDM2485A has a DB-25 connector for RS-232 environments, while the Model
LDM2485B has a DB-9 connector for EIA-574. Both models have several
options for twisted pair connection.
Specifications
Model
LDM2485A/LDM2485B
Transmssion Format
Asynchronous
Data Rate Range
0-115.2K bps
Data Rate bps
115.2K
38.4K
9.6K
1.2K
Distance
km
m
4.2
2.6
4.7
2.9
7.4
4.6
14.5
9.0
RS-232/EIA-574 Interface DB-25/DB-9
RS-485 Interface Options
RJ-11 or RJ-45 jack or termnal block
wth strain relief
Transmt Line
2, 4 wre unconditioned twsted pair
Transmt Mode
4-wre, full or half duplex; 2-wre half duplex
Control Signals
DSR turns “ON” immediately after the
termnal raises DTR; DCD turns “ON” after
recognizing the receive signal fromthe line;
CTS turns “ON” after the termnal raises RTS.
RTS/CTS delay
0 or 8 msec
Carrier
The carrier is swtch selected either
continuous operation or controlled by RTS
Surge Protection
600W power dissipation at 1 ms
Power
Draws operating power fromthe RS-232 or
EIA-574 data and control signals; no AC
power or batteries required.
Temperature
32° to 122° F (0° to 50° C)
Size: 2485A
Size: 2485B
2.66" x 2.10" x 0.73" (68 x 53 x 19 mm)
2.50" x 1.20" x 0.75" (64 x 31 x 19 mm)
Weight
2 oz (57 gm)/1.4 oz (40 gm)
Dataforth does not authorize or warrant its products for use in life support/critical applications.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LDM2485B-PJ1 | Signal Powered High Speed RS-232 to RS-485 Converters |
| LDM2485B-PJ4 | Signal Powered High Speed RS-232 to RS-485 Converters |
| LDM2485B-S | Signal Powered High Speed RS-232 to RS-485 Converters |
| LDM2485B-SJ1 | Signal Powered High Speed RS-232 to RS-485 Converters |
| LDM2485B-SJ4 | Signal Powered High Speed RS-232 to RS-485 Converters |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LDM2485B-PJ1 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Signal Powered High Speed RS-232 to RS-485 Converters |
| LDM2485B-PJ4 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Signal Powered High Speed RS-232 to RS-485 Converters |
| LDM2485B-S | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Signal Powered High Speed RS-232 to RS-485 Converters |
| LDM2485B-SJ1 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Signal Powered High Speed RS-232 to RS-485 Converters |
| LDM2485B-SJ4 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Signal Powered High Speed RS-232 to RS-485 Converters |
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