hübner 1400/1405 decoder for Railbus VT98/VS98(VB98)

and

Circuit diagram of Railbus VT98 and VS98

The directions appears in this document is:

Both for VT98 and VS98

(Top View)

Pin assign of decoder. (Applies to both 1400 and 1405)

1. Rail R
2. Rail L
3. Digital / Analog select
4. M (-) *
5. Program / Speaker
6. Digital / Analog select
7. Lr (switched depends on direction of travel, from internal (rectifier) plus)
8. M (+) *
9. All Light control
10. Program / Speaker
11. All Light control
12. Lf (switched depends on direction of travel, from internal (rectifier) plus)
13. Function (switched for internal (rectifier) minus)
14. Internal plus

* Not connected in 1405 decoder.

Combination of 'direction arrow' on 6021 CU and output.

*Voltages are not measured in actual circuit. Logically analyzed.

Circuit diagram of Hübner's railbus VT98.

Please click on image to enlarge it.

Circuit diagram of Hübner's railbus VS98.

Please click on image to enlarge it.

Additional infos:

• Do not turn on DIP sw - #4. It makes the decoder to irregular mode.
• If it happen to occur this, turn off #4 and set up address by correct process.

Copyright © 2000 by Jun Maeda / KOBE JAPAN