src/hw/lvds_dio.md

@@ -31,49 +31,8 @@ Be aware of the reversed EEM order on the card:
 
 Switch DIPs in required position per each channel individually. Each RJ45 have 4 channels.
 
-![](../img/lvds_ttl_switches.jpg)
-
 ## Testing
 
-```bash
-*** Testing TTL inputs.
-TTL device to use as stimulus (default: ttl0): ttl0
-
-Connect ttl0 to ttl4. Press ENTER when done.
-
-PASSED  # <--------
-Connect ttl0 to ttl5. Press ENTER when done.
-
-FAILED
-Connect ttl0 to ttl6. Press ENTER when done.
-
-FAILED
-Connect ttl0 to ttl7. Press ENTER when done.
-
-FAILED
-...
-
-*** Testing TTL inputs.
-TTL device to use as stimulus (default: ttl0): ttl1
-
-Connect ttl1 to ttl4. Press ENTER when done.
-
-FAILED
-Connect ttl1 to ttl5. Press ENTER when done.
-
-PASSED  # <--------
-Connect ttl1 to ttl6. Press ENTER when done.
-
-FAILED
-Connect ttl1 to ttl7. Press ENTER when done.
-
-FAILED
-...
-```
-1. Connect a RJ45 output port to a input port
-2. Run `artiq_sinara_tester`  
-3. One TTL will pass while other will fail
-4. Run `artiq_sinara_tester` again and increment the stimulus (e.g. `ttl0->ttl1->ttl2->ttl3`) until all channels on the input port passed at least once
-5. Plug into to another input port and repeat 2-4 until all input ports are tested
-
-It is incompatible with other TTL cards, so you will need to use same or other LVDS card for proper testing.
+You can test channels by connecting Ethernet RJ45 cable. Since the artiq_sinara_tester allows to choose only one DIO
+port, you will need to run the test 4 times and choose different output source and track that every 4th is passing the test. 
+It is also incompatible with other TTL cards, so you will need to use same or other LVDS card for proper testing.