Installation manual

UNIPOWER

Installation manual PQ Secure

7.2.1 Necessary settings in the modem

If the modem is connected directly to the recorder no special settings are needed. The modem’s

standard settings are used. The modem should in this case not be configured to answer automatically

(ATS0=0).

If the modem is connected to a signal converter (RS-485/RS-232) it must be configured to answer

automatically (ATS0=1). See below how to configure the modem using the Hyper Terminal in

Windows.

7.2.2 Commands

HyperTerminal is used on the computer to configure the modem, and a number of commands can be

executed to view and change the settings. The important commands are as follows:

AT = Sets the bit rate to the rate used by the computer

ATE0 = Disables the text function, no text sent to the screen.

ATE1 = Enables the echo function, which shows text on the screen.

AT&B0 = Sets the bit rate to automatic mode, adjusts to the other equipment.

AT&B1 = Sets the bit rate to a fixed speed (same as the speed set in HyperTerminal).

ATS0=1 = Sets the modem to automatically answer after 1 ring, the number can be

changed as necessary.

ATS0=0 = Deactivates the automatic answer mode (recommended).

ATI4 = Shows the settings defined in the modem.

AT&W = Saves changes to the modem memory.

ATL1 = Sets the modem´s sound level to level 1. Level 0 (ALT0) turns off the sound

and level 3 (ALT3) sets the sound level to max.