Directv SWM 32 power supply (1 Viewer)

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Claude Greiner

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SatelliteGuys Master
Supporting Founder
Sep 8, 2003
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Detroit - The Paris of the Midwest
I got 4 Directv SWM 32’s without power supplies.

There are 3 spots to add power.

One is a coaxial cable connection which says 24 volts. There is a 20 volt connection similar to what you see on a typical ac adaptor with a round tip, and a 3rd which is the same as the 20 volt connection, but it says 24 volts.

Any idea on which one to use?
 

dishrich

SatelliteGuys Pro
Sep 8, 2003
3,290
342
Springfield, IL
https://www.satpro.tv/SWM-32-DirecTV-Multiswitch-With-Dual-24-and-20V-Power-Supplies.aspx

It appears you have to use at least 2 PS's; one 20v to power the dish LNB & at least one 24v to power half of the switch itself. (SWM outputs 1 & 2)
If you want the other 2 SWM outputs to work, you'll need the 2nd 24v PS.
Here's a diagram:
http://www.satpro.tv/SWM-32-Directv-Multiswitch-With-24V-Power-Supply.aspx

Here's some more info I found...it also appears that DECA is NOT shared across the 4 SWM outputs...since this was really made for commercial settings. (ie: apartments, etc.)
https://www.perfect-10.tv/marketing/perfectvoice/images/TB_Issue_5_2011_SWiM16and32-042511.pdf
 

HoTat2

SatelliteGuys Pro
Jun 12, 2012
1,276
326
Los Angeles, CA.
From a DIRECTV Tech. Bulletin Issue# 5 dated 4/25/2011 regarding the SWiM-16 and 32:

SWiM 32
----------
*SWiM 32 has 2 power options for the 4 SWiM 8’s built in the chassis: a 24v DC F-type connection adaptor or a 24v DC pin type adaptor; the F-type connection is the preferred choice for reliability reasons.

*The SWiM 32 does not need a polarity locker unless it is used in a distribution system, but a 20v DC power supply must be used on first SWiM 32 inline to power the SL3 or SL5 SLIMLINE LNB.

*The SWiM 32 can be cascaded 2 deep. There is no DECA bridge on a SWiM 32 between the 4 independent SWiM modules so the SWiM 32 will not share callback or allow Whole Home DVR functionality between the 4 independent SWiM modules.

*Each independent SWiM module on a SWiM 32 Multi-Switch has its own SWiM output port; however an independent SWiM power supply should never be used on any of the independent SWiM ports as power is supplied by the 24v DC power supply to the whole chassis.

*SWiM 32 is manufactured by UNITRON.

*SWiM 32 has two FLEX ports for 95 (WORLDDIRECT) or 72.5 orbital slots. When using the SWiM 32 as a standalone device, the 95 sat MUST be plugged into the flex port 2 as this version does not perform auto-detect.

*As with all SWiM installations, BBC’s are never used, and all receivers must be SWiM capable.

*The H25 receiver that will only work in a SWiM installation will work with the SWiM 32.

*Each independent SWiM module has an off air input to allow for services in the 54 Mhz to 806Mhz frequency range. A tri-plexer is used to separate these signals from the DIRECTV signal in the
customer’s home.
 

HoTat2

SatelliteGuys Pro
Jun 12, 2012
1,276
326
Los Angeles, CA.
It also appears that the 20 vdc adapter powers an internal preamp for the OTA antenna port signals (if used) to compensate for the splitting loss of dividing it up among the 32's four separate SWiM-8s.
 
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