PROGRAMMING
This decoder supports all programming methods including: register, paged CV, direct CV, and
programming on the main (ops mode programming).
MAKING A TEST TRACK
When you complete the decoder installation, we strongly recommend building a
test track with a 27 ohm resistor to limit current. Only test your installed decoder
on the test track. The test track may prevent damage from an incorrectly installed
decoder.
Note: The program track is NOT a test track. The program track does not use a current limiting
resistor. So it can’t protect an incorrectly installed decoder.
DCC base unit
Power supply
Test track
27 ohm resistor
picture 5. Diagram of test track
CAUTION:
The decoder must be isolated as shown. Apply electrical tape or plastic equiv.) tape
in the areas shown to prevent the electrical contacts from touching the chassis and
damaging the decoder.
picture 2: the loco chassis that 0001642 decoder designed for
Chassis Slots
Tape here
Tape
must
extend down the sides as shown
Chassis Slots
Tape here
Picture3: #0001641 decoder
Picture1: #0001642 decoder
picture 4: the loco chassis that 0001641 decoder designed for
wrap tape
CV
Register
Description
Range
Default
CV1
R1
Short address
1-127
3
CV2
R2
Start voltage
0-32
0
CV3
R3
Acceleration
0-32
0
CV4
R4
Deceleration
0-32
0
CV5
---
Top voltage
0-32
32
---
R6
Page number
---
---
CV29
R5
Basic configuration
---
2
CV7
R7
Manufacturer version number
---
32
CV8
R8
Manufacturer ID
---
143
CV17
---
Long address upper byte
192-231
192
CV18
---
Long address lower byte
0-255
3
CV19
---
Advanced consist address
0-127
0
CV105
---
User identification number
0-255
0
CV106
---
User identification number
0-255
0
The 0001641 decoder is designed to fit most Atlas locomotives. The body shell and fuel tank
casting must be removed and the frame halves must be split to remove the original circuit
board. Wrap the whole notch on both frame halves with tape to prevent motor’s contact
(picture 4) from touching the chassis. Otherwise, the decoder will be destroyed if the motor’s
contact touches any unwrapped part of the chassis.
