Livingston PortMaster 3 » History » Revision 9
Revision 8 (laforge, 02/06/2022 03:15 PM) → Revision 9/22 (laforge, 02/19/2022 12:07 PM)
h1. Livingston Portmaster 3 @laforge bought two Livingston Portmaster 3 PM3A-1E, which are RAS (Remote Access Server) that * terminates one 1E line (30 B-channels) * provides ISDN dial-up on those channels * provides DSP based modems in case analog modem calls should be handled. More details to follow. h2. Documentation * attachment:portmaster3_hardware_installation.pdf * attachment:portmaster3_configuration.pdf * more below (Attachments) h2. Spare Parts / Mods h3. Fan The original fan is a Fonsan DFB0812M (DC 12V 0.1A) fan by DELTA ELECTRONICS INC. The specs seem to state 2600 RPM / 24.8 dB(A) / 29 cfm. I found it too noisy and replaced it with a Noctua NF-A8 FLX with L.N.A (reduced to 1650 rpm / 12.9 dB(A) / 24 cfm) Fun fact: The PM3 actually seems to have a 5V -> 12V DC/DC upconverter just for the fan - instead of simply using a 5V fan... h3. Power Supply One of @laforge's PM3A-E1 had a broken power supply. The oroginal PSU is an ASTEC LPS1112 rated for 5V/22A output (80W convection cooled, 1120W with 30cfm forced air). It was replaced with a Mean Well LRS-150F-5. Mechanical assembly via a custom adapter plate that was fabricated easily from a small piece of aluminium sheet metal with a few drill holes. {{thumbnail(PM3-PSU-1.jpg)}} {{thumbnail(PM3-PSU-4.jpg)}} {{thumbnail(PM3-PSU-2.jpg)}}
