User`s manual

Installation
14 User’s Manual - DSP19.2 Fast Poll Modem
Setting the DIP Switches
S1 and S2 are 10-position DIP switches used to configure all the options and features of the
modem. Table 2-5 shows the setting of the switches.
NOTE:
Switches S1 and S2 are toggle switches. To configure the switches, use a
small sharp pin to firmly press down on one end to open or to close each
switch. Never leave any switch in half open and half close. Press down on the
side of the switch labeled OPEN is referring to as OFF condition. When the
switch is CLOSED, it is in the ON state.
Table 2-1. Modem Switch Settings
Switch Settings
DIP Switches
ON OFF (Default)
DIP Switch S1
S1-1 to S1-3: Modem Data Rate
19200
: SW1=OFF, SW2=OFF, SW3=OFF
9600
: SW1=ON, SW2=OFF, SW3=OFF
2400
: SW1=OFF, SW2=ON, SW3=OFF
Bell 202T
: SW1=OFF, SW2= OFF, SW3= ON
V.23:
SW1=ON, SW2=ON, SW3=ON
S1-4: DTE Async Character
11 bit 10 bit
S1-5: Auto RTS
Enable Disable
S1-6: Transmit Carrier Control
Constant On Controlled by RTS
S1-7: 2- or 4-wire leased line
2-wire half duplex 4-wire full duplex
S1-8: Transmitter Impedance
Controlled by RTS 600 ohms
S1-9: Remote Digital Loopback
Enable Disable
S1-10: Test Only (Reserved)
Test only Normal
DIP Switch S2
S2-1 to S2-3: Transmit Output Level
From -12 to +3 dBm (see Table 2-5)
S2-4: Modem Receive Dynamic Range
-10 to -43dBm +3 to -30dBm
S2-5: TX Cable Equalizer
Enabled Disabled
S2-6: RX Cable Equalizer
Enabled Disabled
S2-7: Anti-streaming
Active Inactive
S2-8: RTS-CTS Delay (Bell 202T only)
33 msec 8 msec
NOTE:
Switches S2-9 and S2-10 are for future options.