RF Neulink NL900 - Manual (Page 11)

NL900 User’s Manual
August 2013 11
2. Troubleshooting
Problem Solution
Read Radio displays error message: “Radio not
responding.” 1. Make sure the proper settings are set in the
Configuration Software. See Section 1.4.3
Programming.
2. Make sure the NL900 unit does not have a Null
Modem cable. Null Modem cables will have
DB9 Male. If the unit has a Null Modem cable,
use a Null Modem adapter to connect the
NL900 to the programming PC.
3. If any other programs that utilize the same COM
port as NL900s are open, close them and try to
read the radio again.
4. Reset the radio by cycling power after each
unsuccessful Read.
Write Radio displays error message: “Radio not
responding.” 1. Cycle power to the radio.
2. Read the radio and make desired changes.
See Section 1.4.3 Programming.
Garbled Data received. 1. Check Data Encryption Standard settings.
Client’s Link LED does not come on. 2. Make sure Server NL900 unit is connected to
power.
3. Cycle power to the radio.
Link LED is on, but data does not get transmitted or
received. 1. Make sure the NL900 unit(s) is connected to the
correct COM Port.
2. 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.
3. Try increasing the Maximum Transmit
Attempts (for Clients) and/or Broadcast
Attempts (for Servers) values in small
increments until communication is established.
4. Connect a Null Modem adapter between the
Client and its host device.
5. Check the Destination Address setting.