Digitrax SE74 Manual Download Page 10

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2.  These six wiring diagrams show how to connect the signal LED leads you 

have into a SE1 cable to display LED aspects. 

SE74 defaults support the 

provided Digitrax test mast with no OPSW changes needed.

3.  Figure 4 shows a PCB test mast with; two 3-color G type heads, 100 ohm 

current-setting resistors and 10-pin plug.  This mast is used for test and 

debugging the operation of SE74 A1/A2 (Dwarf) heads. Rotated 180 degrees 

on the cable this test mast acts like Figure 5; as B/C signal heads on any 

SE1 cable.  The test mast is wired for common anode operation as shown in 

Figure 4. 

The lunar LEDS are shown for wiring detail, and are not installed 

on the PCB test mast

.

4. 

The 3-wire Searchlights of Figures 6 and 7 are common cathode version and 

allow Lunar lamps to be connected for all 4 heads on an SE1 cable. 

5.  The 2-wire searchlight examples in Figures 8 and 9 need OPSW33 =C and do 

D/ A2: Diverging

Dwarf

A1 Mainline

D Lunar

A1 Lunar

Common Anode

FIGURE 4: Test Mast Dual 3 color heads with lunars

Mast Base PCB

common anode/OPSW35 =T

D/ A2: Diverging

Dwarf

A1 Mainline

D Lunar

A1 Lunar

FIGURE 6: A/D direction Dual 3-wire searchlight heads with lunars

common cathode/OPSW35 = C

B Mainline

C Siding

B Lunar

C Lunar

Common Anode

FIGURE 5: B/C direction Dual 3 color heads with lunars

Mast Base PCB

common anode/OPSW35 =T

B mainline

C Siding

B Lunar

C Lunar

FIGURE 7: B/C direction Dual 3-wire searchlight heads with lunars

common cathode/OPSW35 = C

Summary of Contents for SE74

Page 1: ...y wink OFF every 2 secs as a product heartbeat showing the SE74 is operational Alternatively power from DCC feeder wires to the TKA B terminals 3 Plug in an active LocoNet to a SE74 RJ12 connector The...

Page 2: ...om SW257 on that control heads 1 16 consecutively with 2SW per head Each SE74 uses 36 total consecutive SW addresses 2 The SW257 264 settings control heads 1 A1 Main 2 A2 Dwarf 3 Main B DC in Complete...

Page 3: ...74 turnouts can be Broadcast setup by turnout1 SW2041 through turn out4 SW2044 10 SW1024 C turns ON Aspect Exercise cycles SW1024 T turns OFF A double click of the ID button will toggle Exercise ON OF...

Page 4: ...e ID and OPSW LEDs will blink alternately to show one Route can be set up Release the RTS button 2 Select a switch address on your throttle between 1 and 8 and issue the command direction for Closed T...

Page 5: ...in BOLD 5 OPSW s not in this table are reserved and should be kept at Factory default T settings for predictable operation 6 OPSW40 C will reset to Factory defaults on OPSW mode exit Table 1 SE74 OPSW...

Page 6: ...nnected to LocoNet this will occur as a SW message to make the change and notify the system it has occurred Wire to momen tary press on buttons for SW control 2 The pins SENS1 SENS2 SENS3 and SENS4 wi...

Page 7: ...means the 2nd SE74 SW aspect Base would need to be 17 or higher 5 Use the LH encoder knob to scroll up and down through the detected SE74 devices with an underline shown at the 2nd SE74 6 At the 2nd...

Page 8: ...suitable DT602 plugged into LocoNet press the Menu 3 4 keys to enter Route Editor menu If any SE74 is on LocoNet the DT602 will beep after about one second and show DS7x routes at the D soft key posit...

Page 9: ...e CV s ac tually each control 8 individual OPSW bits OPSW1 is ls bit of CV11 through OPSW8 as ms bit of CV11 5 The DT602 does not indicate to the SE74 when programming is complete After finishing CV c...

Page 10: ...n for wiring detail and are not installed on the PCB test mast 4 The 3 wire Searchlights of Figures 6 and 7 are common cathode version and allow Lunar lamps to be connected for all 4 heads on an SE1 c...

Page 11: ...features available 4 For 2 wire pulse solenoids e g a Kato N crossover just wire to R G termi nals in the polarity that operates as you need Do not run more than one solenoid device per SE74 pulsed R...

Page 12: ...ty to operate under and be in compliance with CFR 47 rules as administered by the Federal Communication Commission Digitrax believes any conscientiously installed equipment following guidelines in thi...

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