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3.2 CONFIGURATION SWITCH SETTINGS
The Model 1040 has two sets of eight switches, yielding 16 total
DIP switches. The two sets will be referred to as SW1 and SW2. As
Figure 2 shows, the orientation of all DIP switches is the same with
respect to “ON” and “OFF” positions.
3.3 SWITCH SET SW1
The DIP switches on SW1 set data rate, clock source, async./sync.
mode and carrier control method. The default settings are summarized
in the table below.
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SW1-1 through SW1-4: Data Rate Setting
Switches SW1-1 through SW1-4 are set in combination to
determine the asynchronous and synchronous data rate for the Model
1040.
SW1-1 SW1-2 SW1-3 SW1-4 Setting
On On On On 1.2 Kbps
Off On On On 1.8 Kbps
On Off On On 2.4 Kbps
Off Off On On 3.6 Kbps
On On Off On 4.8 Kbps
Off On Off On 7.2 Kbps
On Off Off On 9.6 Kbps
Off Off Off On 14.4 Kbps
On On On Off 19.2 Kbps
Off On On Off 28.8 Kbps
On On Off Off 38.4 Kbps
SW1-5 and SW1-6: Clock Source
Switches SW1-5 and SW1-6 are set in combination to determine
the clock source for the Model 1040.
SW1-5 SW1-6 Setting
On On Internal transmit clock
Off On Receive recover clock
On Off External transmit clock
SW1-7: Asynchronous/Synchronous Mode
The setting for switch SW1-7 determines whether the Model 1040
is in asynchronous or synchronous operating mode.
SW1-7 Setting
On Asynchronous
Off Synchronous
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Figure 2. Close up of configuration switches
OFF
ON
SW1 SUMMARY TABLE
Position Function Factory Default
SW1-1 Data Rate On
SW1-2 Data Rate Off
SW1-3 Data Rate Off
SW1-4 Data Rate On
SW1-5 Clock Source On
SW1-6 Clock Source On
SW1-7 Async./Sync. On Async.
SW1-8 Carrier Control Off Constantly On
Internal
9,600 bps
}
}