WM_MKT_Fastrack_UGD_001 - 002
September 2002
5.2 Installing Fastrack modem
The Fastrack modem requires the power supply connection to begin operation. It also requires a
SIM card to operate on a GSM network. To install the modem, do the following:
1. Connect the power supply cable into the power supply, with a correct GND connection.
Note for automotive application: according to the type of application, you can use permanent
“+” (recommended) or key-switched “+”.
2. Press the SIM card holder ejector (yellow button) with the tip of a pen or use another sharp
object.
3. Insert the SIM card in the holder.
4. Verify that the SIM card fits in the holder properly.
5. Connect the antenna to the SMA connector.
6. Connect both sides of the serial and control cable (15-pin Sub D connector on the modem
side).
7. Activate the power supply
8. Plug the power supply cable into the Fastrack modem.
Note: Refer to Figure 1 for a general presentation of the Fastrack modem. Refer to Figure 6
for insertion of the SIM card.
5.3 Verifying signal strength
The Fastrack modem establishes a call if the signal is sufficiently strong. To verify the signal
strength, do the following:
1. Using the Hyperterminal program, type the AT command AT+CSQ.
Value appears for the received signal strength.
2. Verify the result with the following chart:
Value of signal strength
(AT+CSQ response) (RSSI)
Signal strength
11 – 31
sufficient*
0 – 10
greater than 99
insufficient*
*
based on general observations
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