CL4790-1000-232 Laird Technologies, CL4790-1000-232 Datasheet - Page 28

• Manufacturer Part Number: CL4790-1000-232
• Description: TXRX 900MHZ RS232 1W W/ANT DB9
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of CL4790-1000-232

• Function: Transceiver
• Modulation Or Protocol: FHSS, FSK
• Frequency: 902MHz ~ 928MHz
• Applications: General Purpose
• Interface: RS-232
• Sensitivity: -99dBm
• Power - Output: 1000mW
• Data Rate - Maximum: 115.2kbps
• Voltage - Supply: 7 V ~ 18 V
• Package / Case: Module
• Wireless Frequency: 900 MHz
• Interface Type: RS-232, RS-485
• Board Size: 121 mm x 70 mm x 30 mm
• Modulation: FHSS, FSK
• Security: 1 byte System ID, DES
• Operating Voltage: 100 V to 120 V
• Output Power: 1000 mW
• Antenna: Dipole
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

CL4790 User’s Manual
5. Troubleshooting
If these troubleshooting tips do not resolve the problem, please call our toll free number at
[phone], extension 207. Technical support hours are Monday through Friday, 8:00 am to
5:00 pm Central Standard Time.
6/24/2005
Read Radio
displays error
message: “Radio
not responding.”
Write Radio
displays error
message: “Radio
not responding.”
Garbled Data
received.
Client’s Link LED
does not come
on.
Link LED is on,
but data does
not get
transmitted or
received.
Problem
1.
1.
2.
3.
4.
1.
2.
1.
2.
3.
4.
5.
1.
2.
Make sure the PC Settings are right. See Section
4.2.3 PC Settings.
Make sure the CL4790 unit(s) is connected to
the correct COM Port.
Make sure the CL4790 unit uses the right serial
cable. Refer to Section 2.1 RS-232.
If any other program that is using the same
COM port as CL4790 is open, close that
program and try to read the radio again.
Reset the radio by cycling power after each
unsuccessful Read.
Check Data Encryption Standard settings.
Check the COM port settings for correct Baud
Rate, Parity and either Hardware or No Flow
Control. Units can have transmission errors
with Flow Control set to Xon/Xoff.
Try increasing the Maximum Transmit Attempts
(for Clients) and/or Broadcast Attempts (for
Servers) values in small increments until
communication is established.
Connect a Null Modem adapter between the
Client and its host device.
Check the Destination Address setting.
Make sure the unit is connected to power.
Cycle power to the radio.
Cycle power to the radio.
Read the radio and make desired changes
and then Write the radio.
CL4790
Solution
1.
1. Make sure the PC Settings are right. See
Section 7.2.3 PC Settings.
2. Make sure the CN4790 unit uses the
right Ethernet cable. Refer to Section 2.2
LAN Port.
3. If any other program that is using the
same LAN port as CN4790 is open, close
that program and try to read the radio again.
4. Reset the radio by cycling power after
each unsuccessful Read.
1. Cycle power to the radio.
2. Read the radio and make desired
changes and then Write the radio.
1. Check Data Encryption Standard
settings.
powered up.
2.
1.
Address is right.
2.
Attempts (for Clients) and/or Broadcast
Attempts (for Servers) values in small
increments until communication is
established.
3.
Make sure Server CN4790 unit is
Cycle power to the radio.
Make sure the CN4790 unit(s) IP
Try increasing the Maximum Transmit
Check the Destination Address setting.
CN4790
28