Recommended DCC track voltages measured as AC:
Z-scale 9v
N-scale 12v
HO-scale 13.8/14v
O-scale 18v
G-scale 22v
Note*** Lighted track bumpers should NOT be used with DCC. These will lower your track voltage AND lower your system capacity.
Reading track voltage correctly on DCC can prove to be a challenge. The voltage on the rails is a Digital PWM form of AC at about 10Khz. , not standard analog AC at 60Hz.
You can test your meter first on a 120v AC wall outlet to ensure you have the meter set correctly and functioning correctly. If you can read a wall outlet, you should be able to read a DCC track voltage.
For a true DCC meter, go here: https://ncedcc.zendesk.com/hc/en-us/articles/17820512774803-DCC-Meter-and-Packet-Analyzer
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Special information regarding the Power Cab only:
For this reason, a regular meter will often not give accurate readings on the rails or on the two-pin plug out on the back of the Power Cab Panel (PCP).
However, the Power Cab Power Supply P114 wall transformer has an output of Standard DC. The power supply included with your Power Cab may be one of several versions based on what was available to us at the time. The question is the voltage and current ratings of your power supply. You should see voltage and current ratings printed on the power supply—example: 13.8v dc. and a current rating of 1.35A, 1.44A, or 1.8A.
To adjust the track output voltage on a Ph-Pro system box, a PB105 booster, or a PB110a booster, watch this Video on YouTube - https://www.youtube.com/watch?v=q_OFl09EbP4
The 5amp and 10amp PH Pro Systems, the P105, and the PB110 Boosters can use AC or DC Power Supplies. Maximum input voltages are 18VAC / 24VDC
The P515 we sell for use with the 5amp PH Pro is 15VAC.
The P519 we sell for use with the 5amp PH Pro is 19VDC.
The Brutus we sell for use with the 10amp PH Pro is 18VAC.
The PH Pro System Box, the P105, and the PB110 all have a voltage adjustment potentiometer inside the box that can be accessed from a small hole in the rear.
This allows for flexibility and voltage matching to other boosters as needed.
The PH Pro and PB105 are used for the Z, N, HO, and S scales.
The PB110 should be used only for O and G Scales unless the end user lowers voltage and proper circuit protection is added for smaller scales like the HO scale.
Because of a change in Federal Regulations, we were forced to change power supplies on any new products from now on. The new power supplies are all DC Switching Power Supplies with the required power factor correction. This new supply has two output options: 12vdc and 13.8vdc, with a switch on the supply. This new supply is used in all newer products, such as the PB5, SB5, and DB5. From now on, all new products must be sold with this type of supply. To sum up, the power supplies are fixed, and the adjustments are in the System boxes.
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