Today I got myself two of these RG316 coaxial cables. Other choices were RG58 and RG174 options. I found this discussion on reddit which suggested that for my application (connecting my bench scope to circuits for testing) any of them will probably do. I got two 4 meter cables, so when I cut them in half I will have four 2 meter cables.
There’s a first time for everything, I have posted a question on reddit: DVD power cable connector type.
Update: well, I got an answer! I have ordered the following:
And I went all out and got myself a new crimping tool as well.
I want to feed the roof aerial in the bottom and out the top to two TVs, can I do that? The resistor is a 75 ohm resistor between the bottom and the top right. Not sure what to make of this.
I found this Custom Cable Creator. Pretty awesome! You can pick from a very wide variety of plugs and sockets and custom make a cable, then order it! Not sure what prices are like, I suspect high, especially for low volume.
I’m getting a RD6006W USB/WiFi DC voltage bench power supply with the S12D case. I’m gonna power it off an old ATX power supply. So I needed a molex to banana plugs cable, and I made one:
I threw a DC barrel power jack on the 5 volt line. Finished with heat shrink tubing, my new favourite thing.
Have just discovered EEVblog with this one: EEVblog #652 – Oscilloscope & Function Generator Termination Demo. Interesting stuff! Tip: always use a x10 probe on your scope.
I have a Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) in my new Ubuntu Trusty (14.04.1) server. As you can see here:
root@orac:/home/jj5# lspci ... 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) ...
I was having a problem with the card only supporting 100baseT speeds. I downloaded and installed the Realtek driver (and rebooted):
# bunzip2 r8168-8.039.00.tar.bz2 # tar xf r8168-8.039.00.tar # cd r8168-8.039.00 # ./autorun.sh # reboot
That didn’t fix the problem.
I installed the ethtool package and ran it:
# apt-get install ethtool
# ethtool p2p1
Settings for p2p1:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
MDI-X: Unknown
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
As you can see the speed is 100Mb/s, not 1000Mb/s. It says that 1000baseT full duplex is supported. I tried forcing the speed:
# ethtool -s p2p1 speed 1000 duplex full advertise 0 autoneg off
But that didn’t work. The ethtool program reported the card was still operating and 100Mb/s.
Then I tried plugging in a different cable… and that fixed the problem!