Portsdown 4 Signal Generator - Revision history

G8GKQ: /* Using an ADF4351 Module as the Output Device */

2022-08-29T16:26:21Z

Using an ADF4351 Module as the Output Device

G8GKQ: /* Using the LimeSDR Mini as the Output Device */

2022-03-04T17:22:55Z

Using the LimeSDR Mini as the Output Device

G8GKQ: /* Using the LimeSDR Mini as the Output Device */

2022-03-04T17:20:58Z

Using the LimeSDR Mini as the Output Device

G8GKQ: /* Using the LimeSDR Mini as the Output Device */

2021-11-01T21:57:39Z

Using the LimeSDR Mini as the Output Device

G8GKQ: /* Using the DATV Express as the Output Device */

2021-11-01T21:56:29Z

Using the DATV Express as the Output Device

G8GKQ: /* Using an NORT Synthesized Local Oscillator Microwave Source as the Output Device */

2021-05-19T17:30:25Z

Using an NORT Synthesized Local Oscillator Microwave Source as the Output Device

G8GKQ: /* Using an Elcom Microwave Source as the Output Device */

2021-05-19T17:28:38Z

Using an Elcom Microwave Source as the Output Device

G8GKQ: /* Using the Pluto as the Output Device */

2021-05-19T17:25:52Z

Using the Pluto as the Output Device

G8GKQ: /* Using an Elcom Microwave Source as the Output Device */

2021-05-19T17:25:34Z

Using an Elcom Microwave Source as the Output Device

G8GKQ at 16:09, 18 October 2020

2020-10-18T16:09:14Z

← Older revision		Revision as of 16:26, 29 August 2022
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	To use an ADF4351, it needs to be connected to the GPIO pins as specified here [url]https://wiki.batc.org.uk/Portsdown_4_GPIO_Connections[/url]. It will cover from 35 MHz to 4.4 GHz, but only has 4 output levels, 3 dB spaced, around -5 dBm.		To use an ADF4351, it needs to be connected to the GPIO pins as specified here [url]https://wiki.batc.org.uk/Portsdown_4_GPIO_Connections[/url]. It will cover from 35 MHz to 4.4 GHz, but only has 4 output levels, 3 dB spaced, around -5 dBm.
		+
		+	===Using an AD9850 DDS Module as the Output Device===
		+
		+	The AD9850 is a DDS integrated circuit from Analog Devices. With a 125 MHz (or lower) clock it will generate frequencies up to half the clock frequency. It has a constant level output and needs filtering to remove aliases above the desired frequency. A number of modules using the device are available from eBay.
		+
		+	To use the AD9850, the clock frequency needs to be entered into the settings on the Signal Generator. The Data Clock needs to be connected to RPi GPIO pin 29, the Data Line to RPi GPIO pin 31 and the FQ_UD line to RPi GPIO pin 8. The parallel data lines need to be hardwired into serial data mode.

	===Using an Elcom Microwave Source as the Output Device===		===Using an Elcom Microwave Source as the Output Device===

@@ Line 23: / Line 23: @@
 ===Using the LimeSDR Mini as the Output Device===
-A LimeSDR Mini can be used as an output device.  The frequency range is 50 MHz to 3500 MHz and the level from about +15 dBm (below 1500 MHz) to -40 dBm.  The LimeSDR must have stock firmware loaded (Version 1.30, not LimeDVB).  Use of the LimeDVB firmware generally results in a lower levl output 1 MHz below the set frequency.
+A LimeSDR Mini can be used as an output device.  The frequency range is 50 MHz to 3500 MHz and the level from about +15 dBm (below 1500 MHz) to -40 dBm.  The LimeSDR must have stock firmware loaded (Version 1.30, not LimeDVB).  Use of the LimeDVB firmware generally results in a lower level output at 1 MHz below the set frequency.
 Note that the LimeSDR Mini does require calibration before it can be used and the calibration spike can be up to +15 dBm even if the output level is set to be very low.

@@ Line 23: / Line 23: @@
 ===Using the LimeSDR Mini as the Output Device===
-A LimeSDR Mini can be used as an output device.  The frequency range is 50 MHz to 3500 MHz and the level from about +15 dBm (below 1500 MHz) to -40 dBm.
+A LimeSDR Mini can be used as an output device.  The frequency range is 50 MHz to 3500 MHz and the level from about +15 dBm (below 1500 MHz) to -40 dBm.  The LimeSDR must have stock firmware loaded (Version 1.30, not LimeDVB).  Use of the LimeDVB firmware generally results in a lower levl output 1 MHz below the set frequency.
 Note that the LimeSDR Mini does require calibration before it can be used and the calibration spike can be up to +15 dBm even if the output level is set to be very low.

← Older revision		Revision as of 21:57, 1 November 2021
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	A LimeSDR Mini can be used as an output device. The frequency range is 50 MHz to 3500 MHz and the level from about +15 dBm (below 1500 MHz) to -40 dBm.		A LimeSDR Mini can be used as an output device. The frequency range is 50 MHz to 3500 MHz and the level from about +15 dBm (below 1500 MHz) to -40 dBm.
		+
		+	Note that the LimeSDR Mini does require calibration before it can be used and the calibration spike can be up to +15 dBm even if the output level is set to be very low.

	===Using the DATV Express as the Output Device===		===Using the DATV Express as the Output Device===

← Older revision		Revision as of 21:56, 1 November 2021
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	Credits go to Alberto Ferraris IU1KVL (of Satsagen fame) for his plutotx software and to Robin Getz for his comments on that software. Thanks also to Colin G4EML for doing the initial investigations on Pluto 5th Harmonic mode.		Credits go to Alberto Ferraris IU1KVL (of Satsagen fame) for his plutotx software and to Robin Getz for his comments on that software. Thanks also to Colin G4EML for doing the initial investigations on Pluto 5th Harmonic mode.
		+
		+	===Using the LimeSDR Mini as the Output Device===
		+
		+	A LimeSDR Mini can be used as an output device. The frequency range is 50 MHz to 3500 MHz and the level from about +15 dBm (below 1500 MHz) to -40 dBm.

	===Using the DATV Express as the Output Device===		===Using the DATV Express as the Output Device===

← Older revision		Revision as of 17:30, 19 May 2021
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	The software will also drive a NORT Synthesized Local Oscillator Microwave source within its operating range somewhere between 10 GHz and 14 GHz (depending on the model). Output level is fixed (generally at around +14 dBm). More information on the NORT SLO modules can be found here https://wiki.microwavers.org.uk/Nort_SLO. Pin connections: SPI Clock 29, SPI Data 31 and SPI Latch Enable 8.		The software will also drive a NORT Synthesized Local Oscillator Microwave source within its operating range somewhere between 10 GHz and 14 GHz (depending on the model). Output level is fixed (generally at around +14 dBm). More information on the NORT SLO modules can be found here https://wiki.microwavers.org.uk/Nort_SLO. Pin connections: SPI Clock 29, SPI Data 31 and SPI Latch Enable 8.
		+
		+	===Controlling an ADF4135-based Synthesizer===
		+
		+	The Portsdown 4 signal generator can also control an ADF4135-based Synthesizer. Pin connections: SPI Clock 29, SPI Data 31 and SPI Latch Enable 8.

← Older revision		Revision as of 17:28, 19 May 2021
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	===Using an Elcom Microwave Source as the Output Device===		===Using an Elcom Microwave Source as the Output Device===

−	The software will also drive an Elcom Microwave source within its operating range somewhere between 10 GHz and 14 GHz (depending on the model). Output level is fixed (generally at around +10 dBm). More information ~~acn~~ be found on the Elcom modules here https://wiki.microwavers.org.uk/24_GHz#Elcom_synthesisers.	+	The software will also drive an Elcom Microwave source within its operating range somewhere between 10 GHz and 14 GHz (depending on the model). Output level is fixed (generally at around +10 dBm). More information can be found on the Elcom modules here https://wiki.microwavers.org.uk/24_GHz#Elcom_synthesisers.
		+
		+	===Using an NORT Synthesized Local Oscillator Microwave Source as the Output Device===
		+
		+	The software will also drive a NORT Synthesized Local Oscillator Microwave source within its operating range somewhere between 10 GHz and 14 GHz (depending on the model). Output level is fixed (generally at around +14 dBm). More information on the NORT SLO modules can be found here https://wiki.microwavers.org.uk/Nort_SLO. Pin connections: SPI Clock 29, SPI Data 31 and SPI Latch Enable 8.

← Older revision		Revision as of 17:25, 19 May 2021
Line 18:		Line 18:

	[[File:Pluto 10368.JPG\|400px]]		[[File:Pluto 10368.JPG\|400px]]
		+
		+	Credits go to Alberto Ferraris IU1KVL (of Satsagen fame) for his plutotx software and to Robin Getz for his comments on that software. Thanks also to Colin G4EML for doing the initial investigations on Pluto 5th Harmonic mode.

	===Using the DATV Express as the Output Device===		===Using the DATV Express as the Output Device===

← Older revision		Revision as of 17:25, 19 May 2021
Line 30:		Line 30:

	The software will also drive an Elcom Microwave source within its operating range somewhere between 10 GHz and 14 GHz (depending on the model). Output level is fixed (generally at around +10 dBm). More information acn be found on the Elcom modules here https://wiki.microwavers.org.uk/24_GHz#Elcom_synthesisers.		The software will also drive an Elcom Microwave source within its operating range somewhere between 10 GHz and 14 GHz (depending on the model). Output level is fixed (generally at around +10 dBm). More information acn be found on the Elcom modules here https://wiki.microwavers.org.uk/24_GHz#Elcom_synthesisers.
−
−	Credits go to Alberto Ferraris IU1KVL (of Satsagen fame) for his plutotx software and to Robin Getz for his comments on that software. Thanks also to Colin G4EML for doing the initial investigations on Pluto 5th Harmonic mode.

@@ Line 1: / Line 1: @@
-[[File:sgmenu11.jpg|400px]]
+[[File:sgmenu1.jpg|400px]][[File:sgmenu11.jpg|400px]]
 The Sig Gen is selected from a button on the top line of the Portsdown Menu 2.  Selecting this takes you to the Sig Gen Menu.  Here you can select the output device to use, a settings menu, or the main control page.
 ===Using the Pluto as the Output Device===