Hy-Gain DCU-1 Instruction Manual Download Page 4 | Manualshive

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Hy-Gain DCU-1 Instruction Manual Download Page 4

CHAPTER 1 INSTALLATION AND

OPERATION

Section 1.

Components of the DCU-1 "Pathfinder" Digital Control Unit

General Description

The DCU-1 "Pathfinder" digital control unit fea-
tures 6 memory presets, automatic brake delay
(8 seconds), automatic motor slowdown (last 5
degrees), automatic motor control on startup,
programmable center of rotation, full circle
analog display of current and target bearings,
digital display of current and target bearings,
automatic display blanking of target bearings,
automatic display blanking (30 minutes), RS-
232 control with passthrough, and an 8 pin
socket for the control cable.

Your existing rotator unit (HAM IV, T2X, or
compatible) must be connected to the control
unit with an 8-wire cable. You may use your
existing cable, you may assemble your own
cable from the information supplied in this
manual, or you may purchase pre-assembled

The DCU-1 "Pathfinder" digital control unit
consists of the following main components:

PN 870804 DCU-1 Control Unit Assembly

PN 870805 Parts Pack DCU-1 (120 VAC)

PN 870843 Parts Pack DCU-1 (220 VAC)

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Summary of Contents for DCU-1

Page 1: ...Digital Control Unit for HAM IV and T 2X Model DCU 1 DCU 1X Instruction Manual 308 Industrial Park Road Starkville MS 39759 USA PH 662 323 9538 FAX 662 323 6551 ...

Page 2: ...1 4 Section 5 Wiring and Check Out 1 5 Section 6 Operation of DCU 1 Control Unit 1 8 Computer Operation 1 9 Section 7 Troubleshooting 1 11 Ground Wires 1 12 Antenna Motion 1 12 Lack of Power 1 12 Checking the Control Unit Voltages 1 13 Checking the Rotator Resistances from the Ground 1 13 Section 8 DCU 1 Control Unit Block Diagrams 1 14 Section 9 DCU 1 Control Unit Replacement Parts List 1 15 Sect...

Page 3: ...s 1 5 4 DCU 1 Display 1 7 5 Wiring Guide 1 9 6 Command 1 9 7 Sample Program 1 10 8 Front Panel PCB 1 14 9 Control PCB and External Components 1 14 List of Tables Table Pag 1 Wiring and Check Out 1 5 2 Control Cable 1 6 3 Troubleshooting 1 11 4 Control Unit Voltages 1 13 5 Rotator Resistances 1 13 ...

Page 4: ... target bearings automatic display blanking of target bearings automatic display blanking 30 minutes RS 232 control with passthrough and an 8 pin socket for the control cable Your existing rotator unit HAM IV T2X or compatible must be connected to the control unit with an 8 wire cable You may use your existing cable you may assemble your own cable from the information supplied in this manual or yo...

Page 5: ...1 Front View Control Unit Display Type Gas Plasma Amber filter Scale 5 degree Analog 1 degree Digital Blanking Target Bearing 8 seconds Total 30 minutes after no activity Display Life 30 000 to 40 000 Hours Memory Presets 6 independently programmable Rotation Center User selectable Brake Delay Automatic Motor Control Front Panel Controls ...

Page 6: ...ul interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is ao guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television...

Page 7: ...s on each side of the mast attachment point it could produce torque on the support mast This is similar to the principle of a weather vane If the unbalance is high enough or the wind velocity is high enough this could prevent rotation or could damage the limit switches To minimize this effect the antenna should be designed for minimum mast torque or torque compensators added to produce minimum mas...

Page 8: ...nd less total lead resistance 3 If this is a new installation assemble the rotator cable as shown in Figure 3 or purchase a pre assembled cable Temporarily attach the mounting screws to the bottom of the rotor unit These will be used to support the rotator during bench testing CAUTION The new connector is numbered differently than the terminal strip Pay close attention to the pin numbers You may w...

Page 9: ... mark Using the knob select a target bearing at least 30 degrees from the current bearing Push the START button The brake in the rotator should release the rotator will turn a few degrees in the opposite direction reverse direction then turn to the target bearing During the last 5 degrees the rotator will slow down to half speed then stop on or close to the target bearing The brake solenoid will h...

Page 10: ...otator system has been installed To store a bearing into a memory loca tion select a target bearing with the knob then press and hold the appropriate memory location button until the letters PRE light up The memory presets are stored in non volatile memory and will stay in memory even if the power is disconnected for a long period of time You may use previously stored memory presets and the knob t...

Page 11: ...g of your rotator The numeric display in the lower right corner and the inner circle tick mark indicates the target bearing This display is also used during calibration to select the center of rotation The center alpha numeric display is used during the calibrate routine and to indicate memory preset selections The tick marks may fluctuate between two marks if the rotator is moving in the wind and...

Page 12: ...ins 1 4 6 together and RTS and CTS Pins 7 and 8 together Figure 5 Wiring Guide The cable which is attached to the computer and to the DCU 1 should have a DB9 male connector at one end and either a DB9 female or DB25 female connector at the other end The connections should be straight through e g pin 1 to pin 1 pin 2 to pin 2 etc if both ends have 9 pin connectors If a DB25 female connector is used...

Page 13: ...o operations A summary of unique commands is shown in Figure 6 The COM port should be used at 4800 baud with no parity 8 data bits 1 stop bit and ASCII mode This is usually shown as 4800 N 8 1 ASC After a command is sent to the DCU 1 all other motor and brake operation is automatic There are no provisions at this time to send current bearing information back to the computer You may wish to check w...

Page 14: ... or burned up or does not change at all Shorts or opens in control cable Extremely high RF field near rotator DCU 1 MPU or A D failure Tower or DCU 1 not grounded Antenna Bearing changes by itself Brake wedge failure DCU 1 MPU failure Current Bearing changes less than 3 degrees Antenna rocking in high winds Potentiometer dirty or poor connection High RF field near rotator Long 200 control cable Ro...

Page 15: ...e correct the 130 156 MFD capacitor may be old If your unit is more than 5 years old try replacing this capacitor Also if your cable run is over 200 feet make sure that you are using the proper wire size See Table 2 For cable runs over 300 feet you may wish to move the motor capacitor to the tower This allows you to run only 6 wires from the control to the rotator so that you can reduce wire resis...

Page 16: ...ee note 1 2 0 30 VAC 1 5 0 30 VA C for CW rotation to target 1 6 0 30 VA C for CCW rotation to target 4 8 0 0 3 7 5 0 VDC 5 0 VDC Table 4 Checking the Rotator Resistances from the ground You may possibly avoid bringing the rotator down from the tower by making electrical resistance checks on the control cable Disconnect the control cable from the control box Check for the following resistances Des...

Page 17: ...Section 8 DCU 1 Control Unit Block Diagrams Figure 8 Front Panel PCB Figure 9 Control PCB and External Components ...

Page 18: ...P2 Contact connector 4 500157 Screw 10 24 x 2 4 500326 Screw 4 40 x 5 16 7 5022500 Terminal solder 1 506325 Screw 1 4 20 x 3 4 1 5086100 Power Cord 120 VAC 1 5079800 Power Cord 220 VAC 1 5112400 Flat Washer 128 I D 1 5113100 Nut 6 32 hex 5 5141100 Rotator Housing Top cover 1 5141200 Rotator Housing bottom cover 1 5151501 Capacitor 130 156 MFD 1 5152700 Bumper rubber feet 4 520057 Screw 6 32 x 3 8 ...

Page 19: ...640077 Plug 8 pin 1 870844 DCU Termination Assembly plug 1 Section 10 How to Get Factory Service If service is required the unit must be packed For units that are in warranty no charge will be securely and sent prepaid to made for any repair work required Include a copy of your sales receipt For out of warranty units call the Warranty Service Department for prices Hy gain 308 Industrial Park Stark...

Page 20: ...r warranty provided the product is returned postage prepaid to Hy Gain with a personal check cashiers check or money order for 8 00 covering postage and handling 3 Under no circumstances is Hy Gain liable for consequential damages to person or property by the use of any Hy Gain products 4 Out of warranty Service Hy Gain will repair any out of warranty product provided the unit is shipped prepaid A...

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