Livingston PortMaster 3 » History » Version 7
laforge, 02/06/2022 03:14 PM
| 1 | 1 | laforge | h1. Livingston Portmaster 3 |
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| 2 | 2 | laforge | |
| 3 | 5 | laforge | @laforge bought two Livingston Portmaster 3 PM3A-1E, which are RAS (Remote Access Server) that |
| 4 | 2 | laforge | * terminates one 1E line (30 B-channels) |
| 5 | * provides ISDN dial-up on those channels |
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| 6 | * provides DSP based modems in case analog modem calls should be handled. |
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| 7 | |||
| 8 | More details to follow. |
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| 9 | 3 | laforge | |
| 10 | h2. Documentation |
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| 11 | |||
| 12 | * attachment:portmaster3_hardware_installation.pdf |
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| 13 | * attachment:portmaster3_configuration.pdf |
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| 14 | 4 | laforge | * more below (Attachments) |
| 15 | 6 | laforge | |
| 16 | h2. Spare Parts / Mods |
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| 17 | |||
| 18 | h3. Fan |
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| 19 | |||
| 20 | 7 | laforge | 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. |
| 21 | 6 | laforge | |
| 22 | 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) |
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| 23 | |||
| 24 | 1 | laforge | 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... |
| 25 | 7 | laforge | |
| 26 | h3. Power Supply |
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| 27 | |||
| 28 | 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). |
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| 29 | |||
| 30 | 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. |
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| 31 | |||
| 32 | {{thumbnail(PM3-PSU-1.jpg)}} |
