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MA-21DC
WESTERMO TELEINDUSTRI AB
MA-21DC
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Card Type
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Modem (asynchronous)
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Chip Set
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Unidentified
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I/O Options
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DC power, RS-232-C, 20 mA current loop via 5-pin terminal block
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Maximum Modem Rate
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19.2Kbps
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Data Modulation Protocol
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C/CCITT V.24/V.28
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Error Correction/Compression
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Unidentified
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Data Bus
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External
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CONNECTIONS
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Function
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Label
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Function
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Label
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Power connector (terminal block)
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CN1
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RS-232-C port
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CN3
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Terminal block
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CN2
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USER CONFIGURABLE SETTINGS
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Function
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Label
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Position
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?
115V AC enabled
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S5
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On
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230V AC enabled
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S5
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Off
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TRANSMITTED SIGNAL SELECTION
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Setting
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S1/1
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S1/2
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S1/3
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S1/4
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??
TD pin 2
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On
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Off
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Off
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Off
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AUX pin 11
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Off
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On
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Off
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Off
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SRS pin 19
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Off
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Off
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On
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Off
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DTR pin 20
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Off
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Off
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Off
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On
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CTS CONRTOL SELECTION
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Setting
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S1/5
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S1/6
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S1/7
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S1/8
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S1/9
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?
RTS
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On
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Off
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On
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On
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Off
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RD
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Off
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On
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Off
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On
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Off
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Always High
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On
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Off
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Off
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On
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On
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TRANSMITTER/RECEIVER SELECTION
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Transmitter Setting
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Receiver Setting
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S2/1
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S2/2
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S2/3
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S2/4
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?
Normal
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Normal
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On
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Off
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On
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Off
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Inverted
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Normal
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Off
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On
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On
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Off
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Normal
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Inverted
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On
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Off
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Off
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On
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Inverted
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Inverted
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Off
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On
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Off
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On
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RECEIVER ACTIVE/PASSIVE SELECTION
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Setting
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S3/1
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S3/2
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S3/3
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S3/4
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S3/5
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S3/6
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?
Passive
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On
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On
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Off
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Off
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Off
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Off
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Active
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Off
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Off
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On
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On
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On
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On
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TRANSMITTER ACTIVE/PASSIVE SELECTION
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Setting
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S4/1
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S4/2
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S4/3
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S4/4
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S4/5
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S4/6
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?
Passive
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On
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On
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Off
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Off
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Off
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Off
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Active
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Off
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Off
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On
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On
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On
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On
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*DIAGNOSTIC LED(S)
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LED
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Color
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Status
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Condition
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LED1
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Unidentified
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On
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Power is on
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LED1
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Unidentified
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Off
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Power is off
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LED2
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Unidentified
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On
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Data is being transmitted
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LED2
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Unidentified
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Off
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Data is not being transmitted
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LED3
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Unidentified
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On
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Data is being received
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LED3
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Unidentified
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Off
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Data is not being received
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