DVB-S/S2 Reception - Revision history

G8GKQ: /* RF Input Level Indication */

2021-09-17T19:41:41Z

RF Input Level Indication

G8GKQ: /* Volume Control */

2021-09-08T14:52:48Z

Volume Control

G8GKQ: /* Volume Control */

2021-09-06T16:13:08Z

Volume Control

G8GKQ: /* Volume Control */

2021-09-05T21:18:09Z

Volume Control

G8GKQ: /* Volume Control */

2021-09-05T21:17:56Z

Volume Control

G8GKQ: /* Video Player (VLC) Restart */

2021-09-05T21:16:15Z

Video Player (VLC) Restart

G8GKQ: /* RF Input Level Indication */

2021-09-05T21:15:16Z

RF Input Level Indication

G8GTZ at 15:26, 8 August 2021

2021-08-08T15:26:56Z

G8GKQ: /* Video Player Restart */

2021-08-04T13:39:39Z

Video Player Restart

G8GKQ: /* RF Input Level Indication */

2021-08-04T13:39:00Z

RF Input Level Indication

@@ Line 47: / Line 47: @@
 ===RF Input Level Indication===
-The RF Input Level displayed on the parameter overlay is an indication of how much RF Power is being sensed by the tuner in a 10 MHz bandwidth around the current selected frequency.  As such, it is useless for peaking signals, but provides a very good indication of whether the MiniTiouner is operating with the optimum input signal level.  The indication should be above -70 dB and below -35 dB of optimum results.  Input levels of below -70 dB are displayed in red to indicate that there might be a problem.  A fuller description is provided here: [[MiniTiouner_Power_Level_Indication]].
+The RF Input Level displayed on the parameter overlay is an indication of how much RF Power is being sensed by the tuner in a 10 MHz bandwidth around the current selected frequency.  As such, it is useless for peaking signals, but provides a very good indication of whether the MiniTiouner is operating with the optimum input signal level.  The indication should be above -70 dB and below -35 dB for optimum results.  Input levels of below -70 dB are displayed in red to indicate that there might be a problem.  A fuller description is provided here: [[MiniTiouner_Power_Level_Indication]].
 ===Volume Control===

← Older revision		Revision as of 14:52, 8 September 2021
Line 56:		Line 56:

	The audio level is set in 11 steps indicated as between 0 and 100%. The audio setting is persistent between reboots, but only affects VLC, not any other of the system media players.		The audio level is set in 11 steps indicated as between 0 and 100%. The audio setting is persistent between reboots, but only affects VLC, not any other of the system media players.
		+
		+	Technical detail:
		+	* The level on all the audio output devices (RPi jack and USB Sound dongles) is set to 100% during start-up of the GUI. This matches the behaviour of Langstone.
		+	* The VLC audio "gain" is set at 3 (on a scale of 0 to 8) in the command line call to VLC.
		+	* The VLC "volume" (which is independent of the gain) is set to 256 (on a scale of 0 to 512) by default in the factory settings. However, pressing the volume up or volume down buttons increases or decreases this figure by steps of 51. The new setting is stored in the config file and applied to VLC through an NC command. The set value is multiplied by 100/512 to get a percentage value which is displayed on the screen. On subsequent VLC start-ups, the stored volume value is read and applied to VLC 1 second after it is started.
		+	* Langstone adjusts the audio volume output from GNURadio independently from Portsdown.

	===Video Player (VLC) Restart===		===Video Player (VLC) Restart===

@@ Line 55: / Line 55: @@
 [[File:TouchMap.jpg|400px]]
-The audi level is set in 11 steps indicated as between 0 and 100%.  The audio setting is persistent between reboots, but only affects VLC, not any other of the system media players.
+The audio level is set in 11 steps indicated as between 0 and 100%.  The audio setting is persistent between reboots, but only affects VLC, not any other of the system media players.
 ===Video Player (VLC) Restart===

@@ Line 53: / Line 53: @@
 The audio level output from VLC can be controlled by touching the upper and lower regions of the right hand side of the screen as shown on the touchmap:
-[[File:TouchMap2.jpg|400px]]
+[[File:TouchMap.jpg|400px]]
 The audi level is set in 11 steps indicated as between 0 and 100%.  The audio setting is persistent between reboots, but only affects VLC, not any other of the system media players.

@@ Line 53: / Line 53: @@
 The audio level output from VLC can be controlled by touching the upper and lower regions of the right hand side of the screen as shown on the touchmap:
-[[File:TouchMap.jpg|400px]]
+[[File:TouchMap2.jpg|400px]]
 The audi level is set in 11 steps indicated as between 0 and 100%.  The audio setting is persistent between reboots, but only affects VLC, not any other of the system media players.

← Older revision		Revision as of 21:16, 5 September 2021
Line 60:		Line 60:

	In "RECEIVE" and "RX DVB-S2 No Scan" modes, the VLC player can be restarted by touching the top left corner of the touchscreen, as shown on the touchmap above. After this restart, the parameter overlay will be displayed continuously. This function can be useful if VLC seems to "lock up" after receiving a corrupt signal.		In "RECEIVE" and "RX DVB-S2 No Scan" modes, the VLC player can be restarted by touching the top left corner of the touchscreen, as shown on the touchmap above. After this restart, the parameter overlay will be displayed continuously. This function can be useful if VLC seems to "lock up" after receiving a corrupt signal.
		+

	[[File:menu46.jpg\|400px]]		[[File:menu46.jpg\|400px]]

@@ Line 1: / Line 1: @@
 The Portsdown will work with the BATC Version 2 MiniTiouner (using the Serit FTS-4334 and FTS-4335 tuners only) to receive DVB-S and DVB-S2 signals over the frequency range 144 MHz to 2450 MHz.  The receive symbol rate is limited to the range 66 kS to about 5 MS; reception at below 66 kS is not currently possible.
-The receive functionality was recently enhanced in the Portsdown 4.  The new capability is described here.
+The receive functionality was recently enhanced in the Portsdown 4 update 202108011.  The capability is described here.
 ===QO-100 or Terrestrial?===

@@ Line 51: / Line 51: @@
 [[File:TouchMap.jpg|400px]]
-===Video Player Restart===
+===Video Player (VLC) Restart===
-In "RECEIVE" and "RX DVB-S2 No Scan" modes, the VLC player can be restarted by touching the top left corner of the touchscreen.  After this restart, the parameter overlay will be displayed continuously.  This function can be useful if VLC seems to "lock up" after receiving a corrupt signal.
+In "RECEIVE" and "RX DVB-S2 No Scan" modes, the VLC player can be restarted by touching the top left corner of the touchscreen, as shown on the touchmap above.  After this restart, the parameter overlay will be displayed continuously.  This function can be useful if VLC seems to "lock up" after receiving a corrupt signal.
 [[File:menu46.jpg|400px]]

← Older revision		Revision as of 13:39, 4 August 2021
Line 48:		Line 48:

	The RF Input Level displayed on the parameter overlay is an indication of how much RF Power is being sensed by the tuner in a 10 MHz bandwidth around the current selected frequency. As such, it is useless for peaking signals, but provides a very good indication of whether the MiniTiouner is operating with the optimum input signal level. The indication should be above -70 dB and below -35 dB of optimum results. Input levels of below -70 dB are displayed in red to indicate that there might be a problem. A fuller description is provided here: [[MiniTiouner_Power_Level_Indication]].		The RF Input Level displayed on the parameter overlay is an indication of how much RF Power is being sensed by the tuner in a 10 MHz bandwidth around the current selected frequency. As such, it is useless for peaking signals, but provides a very good indication of whether the MiniTiouner is operating with the optimum input signal level. The indication should be above -70 dB and below -35 dB of optimum results. Input levels of below -70 dB are displayed in red to indicate that there might be a problem. A fuller description is provided here: [[MiniTiouner_Power_Level_Indication]].
		+
		+	[[File:TouchMap.jpg\|400px]]

	===Video Player Restart===		===Video Player Restart===