ATU-HP Technical Instruction Manual
Oct.06.11
Contents Page
List of Figures/Drawings
1-1
ATU-HP Automatic Antenna Tuning Unit
1-2
2-1 Typical
Site
Layout
2-2
2-2
Examples of Typical Installations (Sheet 1 of 2)
2-3
2-2
Examples of Typical Installations (Sheet 2 of 2)
2-4
2-3
ATU-HP – Customer Interface Connections
2-6
2-4
Initial RF Wiring Connections
2-12
2-5
ATU Control/Monitor PWB – Pushbutton Switches and LEDs
2-12
2-6
Flow Diagram – Loading Coil Tuning
2-13
2-7
Post-Inductive Tuning RF Wiring Connections
2-14
2-8
Flow Diagram – Determining Antenna Resistance
2-15
2-9
Post-Resistive Tuning RF Wiring Connections
2-16
2-10
Variometer Positioning within Loading Coil L1A
2-18
2-11
Variable Matching Transformer
2-19
2-12a
Loading Coil (DGPS) Series Connection (500-136
μ
H) 2-12
2-12b
Loading Coil (DGPS) Parallel Connection (135-20
μ
H) 2-13
2-12c
Loading Coil (NDB Low Power) Series Connection (2700-640
μ
H) 2-14
2-12d
Loading Coil (NDB Low Power) Parallel Connection (639-50
μ
H) 2-15
2-12e
Loading Coil (NDB High Power) Series Connection (1200-300
μ
H) 2-16
2-12f
Loading Coil (NDB High Power) Parallel Connection (639-20
μ
H) 2-17
2-13
Peak Antenna Voltage Versus Spark Gap Setting
2-26
2-14a
Flow Diagram – Adding Antenna Series Resistance (DGPS)
2-29
2-14b
Flow Diagram – Adding Antenna Series Resistance (NDB)
2-30
2-15
Partial View of Series Resistance Transformer T2 Taps
2-31
2-16
ATU-HP – Dimensional Information and Mounting Options
2-32
3-1
Part of ATU Control/Monitor PWB A1 (NAPC144
A/01
)
3
-2
6-1
Block Diagram of ATU-HP Automatic Antenna Tuning Unit
6-3
SD-1
Electrical Schematic – ATU-HP Automatic Antenna Tuning Unit
(NAT40
A
)
SD-1
SD-2
Electrical Schematic – ATU Control/Monitor PWB (NAPC144
A/01
)
(Sheet 1 of 2)
SD-2
SD-3
Electrical Schematic – ATU Control/Monitor PWB (NAPC144
A/01
)
(Sheet 2 of 2)
SD-3
MD-1
Assembly Detail –ATU-HP Automatic Antenna Tuning Unit
(NAT40
A) MD-1
MD-2
Assembly Detail – ATU Control/Monitor PWB (NAPC144
A/01
)
M
D-2