Atlas User Manual: Diesels with QSI Sound 7/52 13 January 2015
Decoders (Quantum, Quantum Titan, or
Quantum Titan with ET)
• Anywhere on the regular track of your layout. [In DCC terminology, programming a locomotive on the track of
your layout is called either Programming on the Main (POM) or Operations Mode (Ops Mode)
Programming.]
If your DCC system allows you to program 4-digit addresses on the main line (many DCC systems do), Atlas
recommends that you take advantage of this capability by programming the address of your Gold Series locomotive
on the main line using Operations Mode (Ops Mode) programming. Table 6 in Section 4.2.3 shows for most of the
DCC systems commonly sold in North America, the DCC systems that do and do not directly support 4-digit address
programming on the main line. For those DCC systems that do NOT support Ops Mode address programming, this
table recommends that you use one or several of the alternate main line address programming procedures that are
described in Sections 4.2.3.2 through 4.2.3.4 For all other DCC systems, use the Ops Mode programming procedure
that is described in Section 4.2.3.1.
Resetting your Locomotive to Factory Default Values Using the Magnetic Wand
(resets all Analog and DCC parameters)
Resetting the firmware in a QSI Sound-Decoder (Quantum™, Quantum Titan™, or Quantum Titan™ with ET) to its
factory-built configuration can resolve many problems that sometimes occur with firmware-controlled electronics. In
fact, we have found that at least 20 to 25 percent of the problems with Gold Series locomotives that we receive for
repair at Atlas can be resolved simply by resetting the sound-decoder. Hence, the very first step you take to resolve
a problem should be to reset the sound-decoder in your locomotive.
Every Atlas locomotive equipped with a QSI sound-decoder has a magnetic reed switch located directly under the top
of the plastic shell. This switch can be activated by the Magnetic Wand (the T-shaped object packed with your
locomotive) without having to disassemble the locomotive.
Atlas recommends using the magnetic wand to reset the QSI sound-decoder whether your locomotive is normally
operated on DC or on DCC. A magnetic wand reset can be done with either DC or DCC track power. However, the
details of the procedure depend on which type of track power (DC or DCC) you are using. The DC and DCC
magnetic wand reset procedures are described in Section 6.2.1
of this User Manual.
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