Patton electronics 1045, Руководство пользователя, Страница: 5 / 10

SWITCH SET SW2
The configuration switches on switch set SW2 set data rate, clock
source, carrier control and RTS/CTS delay. The default settings are
summarized in Figure 4.
SW2-1 through SW2-3: Data Rate Setting
Switches SW2-1 through SW2-3 are set in combination to
determine the asynchronous and synchronous data rate for the Model
1045.
SW2-1 SW2-2 SW2-3 Setting
On Off Off 64 Kbps
Off On Off 56 Kbps
Off Off On 32 Kbps
SW2-4 and SW2-5: Clock Source
Switches SW2-4 and SW2-5 are set in combination to determine
the synchronous clock source for the Model 1045.
SW2-4 SW2-5 Setting
On On Internal transmit clock
Off On Receive recover clock
On Off External transmit clock
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SW2 SUMMARY TABLE
Position Function Factory Default
SW2-1 Data Rate Off
SW2-2 Data Rate On
SW2-3 Data Rate Off
SW2-4 Clock Source On
SW2-5 Clock Source On
SW2-6 Carrier Control Off Constantly On
SW2-7 RTS/CTS Delay On
SW2-8 RTS/CTS Delay On
Internal
56 Kbps
Figure 4. Summary of DIP switch settings for set SW2
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SW2-6: Carrier Control Method
The setting for switch SW2-6 determines whether the carrier is
“constantly on” or “controlled by RTS”. This setting allows for operation
in switched carrier, multipoint and/or hardware handshaking
applications.
SW2-6 Setting
Off Constantly on
On Controlled by RTS
SW2-7 and SW2-8: RTS/CTS Delay
The combined settings for switches SW2-7 and SW2-8 determine
the amount of delay between the time the Model 1045 “sees” RTS and
when it sends CTS.
SW2-7 SW2-8 Setting
Off Off No delay
On On 7mS
On Off 53mS
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