Black Box ME375A-R2, Руководство пользователя

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CHAPTER 3: Installation
Table 3-1. Possible Settings of Internal Controls
Callout Description Position/Label Possible Factory-
No. in Settings Default
Fig. 3-1 Setting
1 DIP Switch Position 1 Async or sync Sync
ON = ASYNC operation
OFF = SYNC
Position 2 8 or 7 data bits 8 bits
ON = 8BIT
OFF = 7BIT
Position 3 Parity enabled Disabled
ON = PRTY or disabled
OFF = DIS
Position 4 Even or odd Even
ON = EVEN parity
OFF = ODD
Position 5 1 or 2 stop bits 1 bit
ON = 1STB
OFF = 2STB
Position 6* DCD independent DCD ind.
ON = DCD or controlled by
OFF = CNT RTS
Position 7† DSR always ON or DSR ON
ON = DSR follows DTR
OFF = DTR
*If DIP Switch Position 6 is set to:
• DCD: The DCD signal is ON as long as the local unit is in proper
synchronization with the remote unit. The DCD signal is OFF when
digital loopback is active or when there is no synchronization (for
example, while the unit is receiving the remote loopback command).
• CNT: The local unit’s DCD signal follows the remote unit’s RTS signal.
†If DIP Switch Position 7 is set to:
• DSR: The DSR signal is ON as long as the local unit is receiving AC
power; it does not indicate the existence of a communication channel
or the status of the remote site.
• DTR: The local unit’s DSR signal follows the remote unit’s DTR signal.