C
C
7
Determine what the TUNING and LIMIT LEDs indicate for both the L and R tuning. L and R TUNING MAX
and MIN LIMIT LEDs should turn ON only at extremes of travel (see figure 4 & 5). Otherwise limit sensor
may be defective.
Note: L tune error may also cause R tune error so check L tune first.
Fig. 2
Ensure the TUNE SETUP and INHIBIT LEDs are
OFF. Ensure the +5V, +12V-A and +12V-B
LEDs are on and the CPU OK LED is
flashing.
4
5
Select LOCAL control (LED ON) to
activate INCREASE and DECREASE
switches.
6
Press INCREASE or DECREASE L TUNING switch,
verify auto tune moves coils back to previous
location.
If coils do not return to previous position consult
tuning procedure in ATU manual or repeat tuning
pocedure from step 1
Note: If necessary switch OFF transmitter and change coil taps to increase or decrease the inductance as
described in the Technical Instruction Manual.
A
A
B
B
ATU-HP: Tuning | Issue 1.0, Apr. 21, 2010
Page 2 of 4
Nautel Customer Support: 1.902.823.3900
