GatesAir Inc. CZF User Manual

 

  

APEX

™

 Exciter Incorporating FLO

™

 Technology

Maintenance and Troubleshooting

Default Settings For DIagnostics Screens

Page: 5-10

888-2604-001

03/08/07

WARNING: Disconnect primary power prior to servicing.

The diagnostics functions are useful for testing and troubleshooting the exciter, but if left
in the wrong position, the transmitter or exciter will not function properly. Table 5-1 is a
quick reference for the default diagnostics settings.

Adaptive Processing

Loopback (choices None, Analog, 
or Digital)

None

Test Tones

Disabled

RF & IF Processing 
(Screen 3 of 4)

Output Power AGC

Enabled

Tune A (UHF up converter tunable 
notch filter)

Values depend on 
UHF channel, 
see Note 1

Tune B (UHF up converter tunable 
B. P. filter)

RF & IF Processing 
(Screen 4 of 4)

RF Sample Select (at down 
converter input)

Automatic

RF Sample AGC (sets down 
converter output level)

Enabled

System Control 
(Screen 1 of 5)

Bit Fifo Test Pattern, used by 
engineering. If enabled, will block 
normal signal flow.

Disabled

System Control 
(Screen 2 of 5)

Analog Loopback

Disabled

Analog Output A

0

Analog output B

0

System Control 
(Screen 3 of 5)

A CAN Test Message is available

Disabled

Note 1. Tune A and/or Tune B may have been changed from the default value to improve the uncorrected output of 

the exciter. Record the existing Tune A and B values before changing them. The default values of Tune A 
and B can be restored by pressing the Reset Tuning soft key on the Up Converter Diagnostics screen.