5
AC Power Transformer Connection
Procedure
To connect the modem to an ac power outlet:
1. Make sure the modem’s power switch is in the Off position.
2. Insert the power transformer’s 5-pin DIN male connector into the modem’s rear
panel ac power receptacle.
3. For the 115V power transformer, insert the power transformer into a grounded ac
power outlet.
For the 220–240V power transformer, insert the line cord’s outlet connector into the
power transformer’s IEC 320 power outlet. Next, insert the line cord wall plug into
the appropriate grounded ac outlet.
To ensure compliance with FCC Part 15 Regulations, a ferrite choke must be installed
on the power transformer cable.
Procedure
To install a ferrite choke on the power transformer cable:
1. Open the ferrite choke, place it around the power transformer cable as close as
possible to the connector attached to the modem, and snap the ferrite choke shut.
2. Install a cable tie behind the ferrite choke to prevent it from sliding along the cable.
Communications Software Installation
A personal computer commands and controls a dial modem through communications
software. This software, which is installed on the PC, uses the AT command set to
send instructions to the modem.
The Model 3830 can be used with any standard communications software. Many of the
following procedures require that your communications software be running so you can
pass commands to the modem.
Modem Power-Up
Once your modem is properly connected to the DTE, dial or leased lines, and ac outlet,
press the modem’s rear panel power switch to the ON position. The modem begins a
power-up self-test in which all front panel LEDs momentarily light (note that this also
occurs on a reset of the modem), and the Power LED remains ON. The state of other
LEDs depends on your modem’s configuration.
On initial power-up, the modem is in Command mode. To verify that the modem is
connected and functioning properly, enter the following:
Type:
AT
Press: Enter
The screen displays OK.
