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48
en | Troubleshooting
7.2.14
Radio Initializing or No Signal Strength
Description:
No reading is available (for example, the radio is resetting).
Solution:
The installation location of the wireless antenna is not optimal, or the wireless service
provider is experiencing technical difficulties.
1.
2.
3.
4.
5.
6.
7.
8.
7.2.15
GSM Network Registration
Description:
The ITS-DX-4020-G is attempting to register on the GSM network. This issue occurs if the
registration never occurred, and can last up to 8 min. After 8 min, the LEDs change to the
double-flash Radio Registration state. This condition can also happen if only one tower is
within RF range and it has an outage. The module continues to attempt to establish
communications.
Solution:
1.
2.
3.
4.
7.2.16
Unacceptable Signal Strength
Description:
The installation location of the wireless antenna is not optimal, or the wireless service
provider is experiencing technical difficulties.
The installation location of the wireless antenna is critical to the signal strength received at
the module. To reduce problems as conditions change, use the highest installation location
possible. Bosch Security Systems, Inc. recommends a signal strength level of Good or higher
for all installations. Refer to Table 3.1, Page 16 for signal strength measurements.
Solution:
To improve the signal strength, perform the recommendations described in
Section 7.2.18 Wireless Reception Issues, page 49.
F01U163066 | 01 | 2010.05
Verify that you have the antenna attached to a metal surface and that there is a minimum
of 4 in. (10 cm) from the base of the antenna in all directions.
Check the antenna connection at the module.
Install the CONFIG jumper so that you can monitor the GSM signal LEDs.
Relocate the antenna on a metal surface, such as the top of the control panel enclosure.
Check the signal on a mobile phone from the same carrier, if available.
If the signal on the phone is good, but the ITS-DX4020-G signal is not good, replace the
antenna.
If the signal on the mobile phone and on the ITS-DX4020-G are bad, check for outages
with the wireless service provider.
If there are no carrier outages, try using a SIM from a different carrier/service provider.
Check for RF signal strength by shorting the CONFIG MODE jumpers and reading the real
time GSM Signal Strength levels.
If the signal strength is unacceptable, refer to Section 7.2.18 Wireless Reception Issues,
page 49.
Replace the SIM card with a known good test card. If the signal strength is acceptable,
confirm that the wireless service provider activated this account and the SIM card
correctly.
If the problem continues, replace the ITS-DX4020-G.
Installation and Operation Guide
GPRS/GSM IP Communicator
Bosch Security Systems, Inc.
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Table of Contents
Troubleshooting
