- Primera Technology Short Range Modem User's Manual RS-232

SWITCH SET SW1
The configuration switches on switch set SW1 set analog
loopback, digital loopback and V.54 enable/disable. The default
settings are summarized in Figure 3 (below).
SW1-1: DTE Initiation of Local Analog Loopback Test
The setting for switch SW1-1 determines whether or not the Model
1035’s local analog loopback test can be initiated by raising pin 18 on
the DTE.
SW1-1
Setting
On Pin 18 initiation enabled
Off Pin 18 initiation disabled
SW1-2: DTE Initiation of Remote Digital Loopback Test
The setting for switch SW1-2 determines whether or not the Model
1035’s remote digital test can be initiated by raising pin 21 on the DTE.
SW1-2 Setting
On Pin 21 initiation enabled
Off Pin 21 initiation disabled
SW1-3 through SW1-7: Not Used
(continued)
5
SW1 SUMMARY TABLE
Position Function Factory Default
SW1-1 DTE Control of Analog Loopback On Enabled
SW1-2 DTE Control of Digital Loopback On Enabled
SW1-3 Not Used Off n/a
SW1-4 Not Used Off n/a
SW1-5 Not Used Off n/a
SW1-6 Not Used Off n/a
SW1-7 Not Used Off n/a
SW1-8 V.54 Enable/Disable Off Enabled
Figure 3. Summary of DIP switch settings for set SW1
SW1-8: V.54 Enable/Disable
The setting for switch SW1-8 determines whether or not the Model
1035’s V.54 circuits are enabled.
SW1-8 Setting
On V.54 test functions disabled
Off V.54 test functions enabled
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 synchronous data rate for the Model 1035.
SW2-1 SW2-2 SW2-3 Setting
On Off Off 64 Kbps
Off On Off 56 Kbps
Off Off On 32 Kbps
(continued)
6
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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