RF Neulink
46
NL6000 User Guide
Appendix A – Diagnosing and Correcting Performance
Problems
Factory technicians use the procedures in this section for initial modem alignment.
After installation, a qualified electronic technician can use these procedures to
diagnose and correct performance problems. Only an electronic technician with
training in RF radio alignment should perform these procedures.
Always perform these procedures using calibrated test equipment. Use the following
test equipment for these procedures [Clay, please check this list]:
•
A calibrated service monitor (IFR) capable of generating and analyzing narrow-
band FM signals in the frequency band of the radio being tested.
•
DC power supply capable of supplying at least 1 amp of current at 10-12V DC.
•
A computer terminal capable of 9600 Baud wired as a DTE.
•
Oscilloscope with at least 5MHz bandwidth.
•
Jumper cable to connect the modem PCB to the radio PCB, while performing the
alignment.
Setting the Power Value
1.
Set the IFR to receive at the radio’s transmit frequency.
2.
From the terminal emulator, enter programming mode.
3.
Select the active channel for the radio as follows:
•
Select
Radio
Select Active Channel
.
•
Enter the active channel assignment for the radio. The value must
be a number in the range 01 – 64.
•
Press
ESC
to return to the
Main Menu
.
4.
Select
Diagnostics
Transmit Continuous Random Data
.
5.
Set the power value as follows:
•
Select
Power
from the
Diagnostics
menu.
•
While watching the power gauge, change the power value and
check the gauge to see that the power value registers correctly. The
value must be a number in the range 0 – 1023.
6.
Select
None
from the
Diagnostics
menu to stop the data transmission.
Setting the Frequency Trim (includes setting Power)
The power setting affects the frequency trim in the NL6000, so part of
setting the frequency trim is setting the power.
1.
Set the IFR to receive at the radio’s transmit frequency.
Summary of Contents for NL6000
Page 1: ......
Page 39: ...RF Neulink 39 NL6000 User Guide 7 Menu Quick Reference 7 1 Main Menu 7 2 Summary Window ...
Page 40: ...RF Neulink 40 NL6000 User Guide 7 3 Serial Menu 7 4 DCD232 SubMenu ...
Page 41: ...RF Neulink 41 NL6000 User Guide 7 5 Network Menu 7 6 Repeater SubMenu ...
Page 42: ...RF Neulink 42 NL6000 User Guide 7 7 Radio Menu 7 8 Diagnostics Menu ...
Page 43: ...RF Neulink 43 NL6000 User Guide 7 9 Save Restore Parameters Menu ...