Bay Technical Associates DS62-Network, DS62-MD4 Network/Modem Host Module Stop Bits, Parity

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DS62-Network, DS62-MD4 Network/Modem Host Module

Stop Bits

The Stop Bits are used to signal the end of communication for a single packet. Since the data is clocked across the lines and each device has its own clock, it is possible for the two devices to become slightly out of sync. Therefore, the stop bits not only indicate the end of transmission but also give the computers some room for error in the clock speeds. The more bits that are used for stop bits, the greater the lenience in synchronizing the different clocks, but the slower the data transmission rate.

Select “Stop Bits” the DS displays the following: Default is 1.

Select stop bits: 1 For 1

2 For 1.5

3 For 2 Enter Request :

Parity

Parity is a simple form of error checking used in serial communication. For even and odd parity, the serial port will set the parity bit (the last bit after the data bits) to a value to ensure that the transmission has an even or odd number of logic high bits. For example, if the data was 011, then for even parity, the parity bit would be 0 to keep the number of logic high bits even. If the parity was odd, then the parity bit would be 1, resulting in 3 logic high bits. This allows the receiving device to know the state of a bit so as to enable the device to determine if noise is corrupting the data or if the transmitting and receiving devices' clocks are out of sync.

With no parity selected, it's assumed that there are other forms of checking that will detect any errors in transmission. No parity also usually means that the parity bit can be used for data, speeding up transmission. In modem-to-modem communication, the type of parity is coordinated by the sending and receiving modems before the transmission takes place.

Select “Parity” the DS displays the following: Default is None.

Select parity: 1 For None 2 For Even 3 For Odd Enter Request :

RTS/DTR Line Driver Inactivity State

RTS (Request to Send)/ DTR (Data Terminal Ready) is normally used in conjunction with an external modem. With no modem the RTS and DTR default state is High.

Select “RTS Driver State” the DS displays the following:

RTS Line Driver Inactive State is: High

High ? (Y/N, CR for no change):

Select “DTR Driver State” the DS displays the following:

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Contents DS Series Manual DS62-Network, DS62-MD4 Network/Modem Host Module EIA-232 Serial Connection DS62-Network, DS62-MD4 Network/Modem Host Module DS62-Network, DS62-MD4 Network/Modem Host Module Connection Description InstallationInternal Modem Connection Quick Start Host Module PowerSerial Setup DS-DS Access Control Login Setup MenuRadius Configuration Network Port ConfigurationCabling DS62 EIA-232 RJ-45 Signal Pin DirectionAdapters Signals Description Signal RS-232 COM Port Port DS Port RPC DE-9 Pin DB-25 PinAdapters Main Screen Detail Operations and ConfigurationsConfiguration Status Unit Configuration MenuDTR RTS Default is None Serial Port ConfigurationHandshaking Word Size Baud RateParity DS62-Network, DS62-MD4 Network/Modem Host Module Stop BitsRTS/DTR Line Driver Inactivity State Connect Port ID Echo Default setting is DisabledSerial Port Device Name Disconnect TimeguardAccess Control Login Setup MenuManage Users ADD User Change User’s Port Access and PasswordSelect a non-root user and the DS displays Direct Port Connection Radius ConfigurationDelete User Tacacs Configuration Tacacs Network Port Configuration Subnet Mask IP AddressBreak Length Inactivity TimeoutGateway Address Carriage Return TranslationSSH Host Key Generation IP Filter ConfigurationSelect F, Flush Rules to delete all rules. The DS displays Snmp Configuration Read/Write Community String Default is zero minutes Web Server ConfigurationDefault is Disabled Default is EnabledModule Name Internal Alarm ThresholdDS Management Select 1, the DS displays External Alarm ThresholdOutlet Groups Select 6, Delete All Outlet Groups and the DS displays Enable Firmware Upgrade Firmware / Config DownloadEnable Configuration File Upload Get Current Configuration File Restore Configuration DefaultsDisplay Configuration Error Log DS62-MD4 Modem Configuration MenuModem Host V90 Modem 9600 None None LO LO Modem Device Name Overall System Status Status MenuNetwork Status Memory Usage Logged UsersCurrent Routing Cache Processes Route SetupLogout Unit ResetUnitInfo Database Functional Solutions TroubleshootingDS62/DS62-MD4 DS62 and DS62-MD4 Reset procedureExceptions BayTech Product WarrantyEmail support@baytech.net Technical SupportReturn Authorization Process
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