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18
Low-Speed (FSK) Mode
Table 2-3 shows the modem switch settings that can be used when the
modem is configured for low-speed (FSK) mode. This mode is enabled
when switch SW2-1 is set to ON. Following this table is an explanation
of these settings.
Table 2-3. Modem Switch Settings for Low-Speed Mode
Switch SettingsSwitches
ON OFF
SW 1-1
−
1-4: Transmit Level
(page 19)
(see Table 2-4 page 19)
SW 1-5: Receiver Dynamic Range
(page 20)
−
10 to
−
43 dBm +3 to
−
30 dBm
SW 1-6
−
SW1-7: RTS-CTS Delay
(page 20)
(see Table 2-5 page 20)
SW 1-8: Anti-streaming (page 20) Active Inactive
SW 2-1: High-Speed)/Low-Speed
Mode (page 21)
Low-Speed (FSK)
Mode
High-Speed
(Fast Poll) Mode
SW 2-2: CD Delay (page 21) 23 ms. 6 ms.
SW 2-3: Turnaround SQ (page 21) 0 ms. 8 ms.
SW 2-4: Not Used
SW2-5: Soft Carrier (page 22) Disabled Enabled
SW 2-6: Production Test Only
(page 22)
Test Normal
SW 2-7: 2- or 4-wire (page 22) 2-wire 4-wire
SW 2-8: Carrier Control (page 22) Constant Switched
SW 2-9: Rx Termination (page23) Disabled Enabled
SW 2-10: Ground Options (page 23) Chassis Ground-
Signal Ground
Connected
Chassis Ground-
Signal Ground
Disconnected