Specifications

SW1-1 through SW1-4 − Transmit Level
Switches SW1-1 through SW1-4 adjust the modem’s transmit level. Table 2-2 shows the transmit levels you can
select using these switches.
Table 2-2. Transmit Levels
SW1 through SW4 Switch Settings
Transmit Level
SW1-1 SW1-2 SW1-3 SW1-4
0 dBm OFF OFF OFF OFF
−1 dBm
OFF OFF OFF ON
−2 dBm
OFF OFF ON OFF
−3 dBm
OFF OFF ON ON
−4 dBm
OFF ON OFF OFF
−5 dBm
OFF ON OFF ON
−6 dBm
OFF ON ON OFF
−7 dBm
OFF ON ON ON
−8 dBm
ON OFF OFF OFF
−9 dBm
ON OFF OFF ON
−10 dBm
ON OFF ON OFF
−11 dBm
ON OFF ON ON
−12 dBm
ON ON OFF OFF
−13 dBm
ON ON OFF ON
−14 dBm
ON ON ON OFF
+3 dBm ON ON ON ON
SW1-5 − Receiver Dynamic Range
SW1-5
ON =
−10 to −43 dBm
OFF = +3 to −30 dBm
For a low receive signal level, set SW1-5 to ON (−43 dBm ). For short distances or to select a strong receive signal,
set SW1-5 to OFF.
SW1-6 and SW1-7 − Cable Equalizer (Fast-Poll Mode Only)
SW1-6 ON = Enable TX Cable Equalizer
OFF = Disable TX Cable Equalizer
SW1-7 ON = Enable RX Cable Equalizer
OFF = Disable RX Cable Equalizer
To improve or extend the modem’s polling performance, use the fixed Compromise Cable Equalizer when polling
on long metallic circuits. The cable equalizer is active only when the modem is in fast-poll mode (SW3-1 set to
OFF).
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