Updated Band Switching - Revision history

G8GKQ: /* Backwards Compatibility */

2021-06-28T13:48:03Z

Backwards Compatibility

2021-06-28T13:46:35Z

Changing the settings for a Band

2021-06-27T21:27:25Z

Changing the settings for a Band

2021-06-27T21:26:19Z

Changing the settings for a Band

2021-06-27T21:25:00Z

GPIO Lines

2021-06-27T19:42:53Z

Factory Default Settings

2021-06-27T15:42:31Z

2021-06-26T20:54:48Z

Changing the settings for a Band

2021-06-26T20:54:05Z

Selecting a Band for Use

2021-06-26T20:52:28Z

GPIO Lines

← Older revision		Revision as of 13:48, 28 June 2021
Line 94:		Line 94:

	The settings above have been carefully chosen so that the default settings are backwards compatible with the 4-band and 8-band RF switch designs.		The settings above have been carefully chosen so that the default settings are backwards compatible with the 4-band and 8-band RF switch designs.
		+
		+	Note that if you update from previous version of Portsdown, the band settings will not be changed to the Factory defaults above. You previous settings will be retained for the old bands.

@@ Line 79: / Line 79: @@
 ===Changing the settings for a Band===
-The settings for each band can be changed by selecting Menu3, Set Band Details and then selecting the appropriate band.  The system will then request that you enter settings for each of the parameters above except the LimeRFE and Receive LO values.  The LimeRFE values are entered from the Lime Config Menu whilst the appropriate band is selected.
+The settings for each band can be changed by selecting Menu 3, Set Band Details and then selecting the appropriate band.  The system will then request that you enter settings for each of the parameters above except the LimeRFE and Receive LO values.  The LimeRFE values are entered from the Lime Config Menu whilst the appropriate band is selected.
 The receive LO values (for driving and ADF4351-based up-converter) are entered by selecting Menu 3, Set RX LOs; note that this menu is not yet fully functional.
 The contest numbers for the bands can also be managed in sets related to their locator from Menu 3, Set Call Loc & PIDs, Set Contest Codes.
 ===Selecting a Band for Use===

@@ Line 81: / Line 81: @@
 The settings for each band can be changed by selecting Menu3, Set Band Details and then selecting the appropriate band.  The system will then request that you enter settings for each of the parameters above except the LimeRFE and Receive LO values.  The LimeRFE values are entered from the Lime Config Menu whilst the appropriate band is selected.
-The receive LO values are entered by selecting Menu 3, Set RX LOs; note that this menu is not yet fully functional.
+The receive LO values (for driving and ADF4351-based up-converter) are entered by selecting Menu 3, Set RX LOs; note that this menu is not yet fully functional.
 The contest numbers for the bands can also be managed in sets related to their locator from Menu 3, Set Call Loc & PIDs, Set Contest Codes.

@@ Line 83: / Line 83: @@
 The receive LO values are entered by selecting Menu 3, Set RX LOs; note that this menu is not yet fully functional.
-The contest mumbers for the bands can also be managed in sets related to their locator from Menu 3, Set Call Loc & PIDs, Set Contest Codes.
+The contest numbers for the bands can also be managed in sets related to their locator from Menu 3, Set Call Loc & PIDs, Set Contest Codes.
 ===Selecting a Band for Use===

@@ Line 74: / Line 74: @@
 | D3 MSB || 22 || 22
 |}
 ===Changing the settings for a Band===

@@ Line 51: / Line 51: @@
 | 24 GHz Tranverter || 24_GHz_T || 23610 || 0 1 1 1 || 7 || (t4) || (8)
 |-
-| 47 GHz Tranverter || 47_GHz_T || 469440 || 1 0 0 1 || 9 || (t6) || (11)
+| 47 GHz Tranverter || 47_GHz_T || 46944 || 1 0 0 1 || 9 || (t6) || (11)
 |-
-| 76 GHz Tranverter || 76_GHz_T || 758320 || 1 0 1 0 || 10 || (t7) || (12)
+| 76 GHz Tranverter || 76_GHz_T || 75832 || 1 0 1 0 || 10 || (t7) || (12)
 |-
 | Spare || Spare || 0 || 1 1 1 0 || 14 || (t8) || (13)

@@ Line 5: / Line 5: @@
 Against each of the 16 bands, the following settings are stored:
 * A Label that is displayed on the band select button and the Contest card for that band.
-* A transverter (transmit) local oscillator frequency, so that both the IF drive frequncy and the final transmitted frequency can be displayed on the Portsdown Menus.
+* A transverter (transmit) local oscillator frequency, so that both the IF drive frequency and the final transmitted frequency can be displayed on the Portsdown Menus.
 * Settings for the 4 GPIO lines, which are available on the Raspberry Pi GPIO header, the LimeSDR FPGA GPIO and the DATV Express GPIO pins.
 * An attenuation level for an external attenuator to set the transmit drive level.

← Older revision		Revision as of 20:54, 26 June 2021
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	By default, the band is selected automatically based on the transmit frequency selected. So anything under 60 MHz is assumed to be 50 MHz, anything between 50 and 100 MHz is assumed to be 71 MHz and so on. To overide this and use a transverter, select the Band/Tvtr button on the main menu, and then select the transverter band that you want. Alternatively, you can select "Direct" to resume automatic selection of bands where no transverter is used.		By default, the band is selected automatically based on the transmit frequency selected. So anything under 60 MHz is assumed to be 50 MHz, anything between 50 and 100 MHz is assumed to be 71 MHz and so on. To overide this and use a transverter, select the Band/Tvtr button on the main menu, and then select the transverter band that you want. Alternatively, you can select "Direct" to resume automatic selection of bands where no transverter is used.
		+
		+	===Backwards Compatibility===
		+
		+	The settings above have been carefully chosen so that the default settings are backwards compatible with the 4-band and 8-band RF switch designs.

@@ Line 60: / Line 60: @@
 ===GPIO Lines===
-The 4 GPIO lines used are listed below.  Note that the MSB is only available on a Portsdown 2020 if a 7 inch screen or the SSH console is being used to control the system.  The pin is used by smaller touchscreens, and so is cannot be set.
+The 4 GPIO lines used are listed below.  Note that the MSB is only available on a Portsdown 2020 if a 7 inch screen or the SSH console is being used to control the system.  The pin is used by smaller touchscreens, and so it cannot be used for band switching.
 {| class="wikitable"