We suppose you are having an installed link where something went wrong.
You want to fix the link.
- Go to the roof and check by nightshot camera with zoom or B/W CCD
camera if the other side is shining.
- Look with the camera into local TX and check if it's shining and if it's
not covered by water droplets from inside.
- Move around the roof and check if the maximum is aligned with local
receiver. If not, realign the distant transmitter.
- Connect a voltmeter to local RX's RSSI and check if there is signal
- Play a bit with the RX alignment nuts and make sure the RX is aligned
in the optimum direction.
- Perform bit error rate measurement
of the link. If you cannot, perform
packetloss measurement of the link.
- Perform bit error rate measurement
for Twister2 on each side. If you can't, do packetloss
measurement for Twister2.
- If you haven't found the fault now, it must be in the receiver or the
transmitter.
- Take out receiver and transmitter on one side and perform
Noise Equivalent Distance measurement.
- Repeat the last step for the other side of the link
Causes of dead receiver
- Lightning strike - replace Q101 transistor
- Water in the electronics for some time - throw away and make another
receiver (this one will never be reliable again)
- Cold joint started to manifest itself - remelt all joints with a bit
of rosin flux
Causes of dead transmitter
- Water in the electronics for some time - throw away and make another
transmitter (this one will never be reliable again)
- Cold joint started to manifest itself - remelt all joints with a bit
of rosin flux
Contact, support: Clock
on the Internet Relay Chat.© 1998-2016 Karel ‘Clock’ Kulhavý et al..