![Synxcom SM19202FP Скачать руководство пользователя страница 12](http://html1.mh-extra.com/html/synxcom/sm19202fp/sm19202fp_user-manual_1421422012.webp)
Installation
12
User’s Manual - SM19202 Fast Poll Modem
Configuring the Stand-alone Modem
You configure the modem using the three sets of DIP switches located at the bottom of the
modem box S1 and S2, and S3.
Configuration DIP switches S1 and S2 for the stand-alone and rack-mount modems are
identical. Their descriptions in this user’s manual apply to both modem versions.
Configuration jumper JP1 for the rack-mount modem card is used to select receiver
termination impedance.
It is important to follow the steps described below, in the order shown, to ensure that you
configure your modem properly using the modem DIP switches:
1. Use DIP switch 1 (S1) to configure the modem for your host DTE interface and
network topology. Using S1, you select the modem’s operating speed to match
you host computer or RTU devices, and other DTE specific operating
parameters.
2. Use DIP switch 2 (S2) to select the modem’s transmitter output level and receiver
dynamic range specific leased line conditions. The S2 settings apply for both
high-speed fast-poll (QAM) and low-speed (FSK) modes.
3. After you change the DIP switch settings, recycle power to the modem to have
the settings take effect.
NOTE: The DIP switch settings may not take effect until you recycle power to the
modem.
To access the configuration DIP switches on the stand-alone modem:
1. Ground yourself to discharge any ESD, which might cause damage to the
sensitive devices on the modem board.
2. Due to re-designing of the modem’s main assembly circuit board and the chassis,
you do not need to open the enclosure to get access to the DIP switches . Place
the modem on a flat surface with the bottom up. The locations of the DIP
switches for the stand-alone modem are shown in Figure 2-4 on the next page.
To set the configuration for the modem, use a sharp pin or small screw driver to
slide the switch lever to the ON or OFF positions as shown in Table 2-1.
For DIP switches and jumpers on the rack-mount plug-in module, see Figure 2-5.
***IMPORTANT***
Carefully check the DIP switches for the ON (close) or OFF (open) positions
according to your RTU interface specifications and to match the data rate and
other control inputs to the modem.