Testing a HamTV Receiver using the Portsdown - Revision history

G8GKQ: /* Advanced Notes */

2024-07-05T18:56:10Z

Advanced Notes

G8GKQ: /* Configuring for automatic transmission on 2395 MHz */

2024-07-05T18:53:00Z

Configuring for automatic transmission on 2395 MHz

G8GKQ: /* Advanced Notes */

2024-07-05T17:02:32Z

Advanced Notes

G8GKQ: /* Configuring for automatic transmission on 2395 MHz */

2024-07-05T17:01:03Z

Configuring for automatic transmission on 2395 MHz

G8GKQ: /* Configuring for automatic transmission on 2395 MHz */

2024-07-05T16:39:50Z

Configuring for automatic transmission on 2395 MHz

G8GKQ: /* Configuring for automatic transmission on 2395 MHz */

2024-07-05T16:39:31Z

Configuring for automatic transmission on 2395 MHz

G8GKQ: /* Configuring for automatic transmission on 2395 MHz */

2024-07-05T16:38:18Z

Configuring for automatic transmission on 2395 MHz

G8GKQ: /* Running the Build Script */

2024-07-05T16:37:34Z

Running the Build Script

G8GKQ: /* Running the Build Script */

2024-07-05T16:37:17Z

Running the Build Script

G8GKQ: /* Equipment Required */

2024-07-05T16:33:35Z

Equipment Required

← Older revision		Revision as of 18:56, 5 July 2024
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	If your LAN is configured to use the 192.168.2.* subnet, this conflicts with the IP address used in the Pluto. Whilst configuring the Pluto you should set it's IP address to 192.168.3.1 using the procedure here: https://wiki.analog.com/university/tools/pluto/users/customizing Then, when configuring the Portsdown, you should select M3, Pluto Config, Set Pluto IP for Portsdown and enter 192.168.3.1.		If your LAN is configured to use the 192.168.2.* subnet, this conflicts with the IP address used in the Pluto. Whilst configuring the Pluto you should set it's IP address to 192.168.3.1 using the procedure here: https://wiki.analog.com/university/tools/pluto/users/customizing Then, when configuring the Portsdown, you should select M3, Pluto Config, Set Pluto IP for Portsdown and enter 192.168.3.1.
		+
		+	The Pluto SDR does not like too high a supply voltage from the Raspberry Pi USB port. If possible, the Raspberry Pi power supply should be adjusted to give 4.9 v on the Pluto USB port. Voltages above 5.1 v can cause the Pluto USB connection to drop out; this is the first thing that should be investigated if the Pluto fails to produce RF.

	It is possible to use a LimeSDR Mini or a LimeSDR USB instead of the Pluto. Simply connect it by USB, and select Output To, Lime USB or Lime Mini.		It is possible to use a LimeSDR Mini or a LimeSDR USB instead of the Pluto. Simply connect it by USB, and select Output To, Lime USB or Lime Mini.

@@ Line 149: / Line 149: @@
 [[File:Configured Menu.png|400px]]
-If you select the TX button, the button will go red and then the top left of a test card will be displayed.  This is normal for web view; the transmitted image will be complete.
+Note that the screen olnly refreshes once a second, so there may seem to be a delay after each button press.
-You can stop the transmission by clicking within the image, and it should return to the menu.  Selecting M2 shows the shutdown and reboot buttons in the bottom left.  Try a reboot, and make sure that the unti starts transmitting once it has started up.
+If you select the TX button, the button will go red and then the top left of a test card will be displayed.  This is normal for web view; the transmitted image will be complete.  It takes about 10 seconds for the transmitter to produce RF after transmit is selected.
 Ideally, the Raspberry Pi should be cleanly shutdown using the "Shutdown" button on Menu 2, but experience has shown that it it is very rare for a simple power-off while transmitting to cause any corruption on the SD card.

@@ Line 157: / Line 157: @@
 ===Advanced Notes===
-The video encoding on the tarnsmission from the Pluto is H264, whereas HamTV is MPEG-2.  Thi sdoes not make any deifference for testing as the MiniTioune, Portsdown and Ryde receivers handle both standards.
+The video encoding on the transmission from the Pluto is H264, whereas HamTV is MPEG-2.  This sdoes not make any difference for testing as the MiniTioune, Portsdown and Ryde receivers handle both standards.
 The power output of the Pluto as configured is 1 mW (0 dBm).  This power can be reduced by entering a negative number using the "Pluto Pwr" button.  In this configuration, the "Pluto Pwr" setting is approximately the power output in dBm.  This is not the case at lower frequencies, where the power output is higher.
-If your LAN is configured to use the 192.168.2.* subnet, this conflicts with the IP address used in the Pluto.  Whilst configuring the Pluto you should set it's IP address to 192.168.3.1 using the procedure here: https://wiki.analog.com/university/tools/pluto/users/customizing Then  when configuring the Portsdown, you should select M3, Pluto Config, Set Pluto IP for Portsdown and enter 192.168.3.1.
+If your LAN is configured to use the 192.168.2.* subnet, this conflicts with the IP address used in the Pluto.  Whilst configuring the Pluto you should set it's IP address to 192.168.3.1 using the procedure here: https://wiki.analog.com/university/tools/pluto/users/customizing Then, when configuring the Portsdown, you should select M3, Pluto Config, Set Pluto IP for Portsdown and enter 192.168.3.1.
 It is possible to use a LimeSDR Mini or a LimeSDR USB instead of the Pluto.  Simply connect it by USB, and select Output To, Lime USB or Lime Mini.

← Older revision		Revision as of 17:01, 5 July 2024
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	# Store Preset (goes red), Preset 1, New Label, press clear, HAMTV 2395 enter		# Store Preset (goes red), Preset 1, New Label, press clear, HAMTV 2395 enter
	# M3 (brings up the Configuration Menu), System Config, Start-up App, Boot to Transmit, Exit		# M3 (brings up the Configuration Menu), System Config, Start-up App, Boot to Transmit, Exit
		+
		+	When correctly configured, the screen should look like this:
		+
		+	[[File:Configured Menu.png\|400px]]
		+
		+	If you select the TX button, the button will go red and then the top left of a test card will be displayed. This is normal for web view; the transmitted image will be complete.
		+
		+	You can stop the transmission by clicking within the image, and it should return to the menu. Selecting M2 shows the shutdown and reboot buttons in the bottom left. Try a reboot, and make sure that the unti starts transmitting once it has started up.
		+
		+	Ideally, the Raspberry Pi should be cleanly shutdown using the "Shutdown" button on Menu 2, but experience has shown that it it is very rare for a simple power-off while transmitting to cause any corruption on the SD card.
		+
		+	===Advanced Notes===
		+
		+	The video encoding on the tarnsmission from the Pluto is H264, whereas HamTV is MPEG-2. Thi sdoes not make any deifference for testing as the MiniTioune, Portsdown and Ryde receivers handle both standards.
		+
		+	The power output of the Pluto as configured is 1 mW (0 dBm). This power can be reduced by entering a negative number using the "Pluto Pwr" button. In this configuration, the "Pluto Pwr" setting is approximately the power output in dBm. This is not the case at lower frequencies, where the power output is higher.
		+
		+	If your LAN is configured to use the 192.168.2.* subnet, this conflicts with the IP address used in the Pluto. Whilst configuring the Pluto you should set it's IP address to 192.168.3.1 using the procedure here: https://wiki.analog.com/university/tools/pluto/users/customizing Then when configuring the Portsdown, you should select M3, Pluto Config, Set Pluto IP for Portsdown and enter 192.168.3.1.
		+
		+	It is possible to use a LimeSDR Mini or a LimeSDR USB instead of the Pluto. Simply connect it by USB, and select Output To, Lime USB or Lime Mini.

@@ Line 132: / Line 132: @@
 ===Configuring for automatic transmission on 2395 MHz===
-First, connect the Pluto SDR.  Then, using the mouse to press the "buttons" on the web browser, make the following selections:
+First, connect the Pluto SDR.  Then, using the PC mouse to press the "buttons" on the web browser, make the following selections:
 # Modulation: DVB-S QPSK

@@ Line 135: / Line 135: @@
 # Modulation: DVB-S QPSK
 # Encoder: H264
+# Output to: Pluto
-Output to: Pluto
+# Format: 4:3
+# Source: Test card
-Format: 4:3
+# Freq: 2395 MHz.  Use thwe Keyboard button, press clear, then 2395, enter.
+# Sym Rate: 2000
-Source: Test card
+# FEC: 1/2
+# Store Preset (goes red), Preset 1, New Label, press clear, HAMTV 2395 enter
-Freq: 2395 MHz.  Use thwe Keyboard button, press clear, then 2395, enter.
+# M3 (brings up the Configuration Menu), System Config, Start-up App, Boot to Transmit, Exit

← Older revision		Revision as of 16:37, 5 July 2024
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	[[File:New Menu.png\|400px]]		[[File:New Menu.png\|400px]]
−
−	~~Click "Touchscreen" and you will be ready for the next step.~~

	===Configuring for automatic transmission on 2395 MHz===		===Configuring for automatic transmission on 2395 MHz===

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 The actual numbers will be different in every case.  You should get a screen like this:
-[[File:01_landing.JPG|200px]]
+[[File:New Menu.png|400px]]
 Click "Touchscreen" and you will be ready for the next step.

@@ Line 10: / Line 10: @@
 * A wired network connection for the Raspberry Pi during setup.
-[[File:SD Cards.jpg|100px]]
+[[File:01 RPi 4.jpg|200px]] [[File:SD Cards.jpg|200px]] [[File:3 Pluto.jpg|200px]]
 ===Setup Activities===