Using Standard Setups/Presets (Digital Demod)

The following table lists the standard presets supported by the VSA. Click on a link to view the default parameter settings for that standard:

Available "Preset to Standard" Formats
Cellular	Wireless Networking	Digital Video	Other
CDMA BASE	Bluetooth®	J.83A/DVB-C (EUR)	APCO-25
CDMA MOBILE	HIPERLAN/1 (HBR)	J.83B/DOCSIS (NA)	APCO- 25 P2 (HCPM)
CDPD	HIPERLAN/1 (LBR)	J.83C/ISDB-C (JPN)	APC-25 P2 (HDQPSK)
EDGE	WLAN (802.11b)	DVB-S2 16APSK	DECT
GSM	Wi-SUN	DVB-S2 32APSK	TETRA
NADC	ZigBee 868 MHz	ATSC	VDL Mode 3
PDC	ZigBee 915 MHz	ATSC-M/H	MIL-STD 188-181C:CPM(Opt 21)
PHP (PHS)	ZigBee 2450 MHz		SOQPSK-TG (IRIG 106-04)
W-CDMA			SOQPSK-A
			SOQPSK-B

In the following tables, to convert symbols to seconds, divide by the symbol rate.

	Preset-To-Standard Format
Parameter	NADC North American Digital Cellular	PDC Personal or Pacific Digital Cellular: A Japanese standard for digital mobile telephony in the 800 MHz and 1500 MHz bands. To avoid the previous problem of lack of compatibility between the differing types of earlier analog mobile phones in Japan (i.e. NTT type and US developed TACS type), digital mobile phones have been standardized under PDC. In the case of the PDC standard, primarily six channel TDMA (Time Division Multiple Access) technology is applied. PDC, however, is a standard unique to Japan which renders such phone units incompatible with devices which adopt the more worldwide prevalent GSM standard. Nevertheless, digitalization under the standard enables ever smaller and lighter mobile phones which in turn has spurred market expansion. As a result, over 93% of all mobile phones in Japan are now digital.	PHP Personal Handy Phone: The mobile hand-set used with the Japanese Personal Handy Phone system. (PHS 1) Personal Handy Phone System, or 2) payload header suppression: The process of suppressing the repetitive portion of payload headers at the sender and restoring the headers at the receiver.)
Demod Format	pi/4 DQPSK Differential Quadrature Phase Shift Keying: QPSK modulation using differential encoding of the digital information stream.	pi/4 DQPSK	pi/4 DQPSK
Frequency Span	75 kHz kiloHertz: A radio frequency measurement (one kilohertz = one thousand cycles per second).	75 kHz	625 kHz
Symbol Rate	24.3 kHz	21 kHz	192 kHz
Filtering
- Measured	root cosine	root cosine	root cosine
- Reference	cosine	cosine	cosine
Alpha / BT Bandwidth Time Product	0.35	0.5	0.5
Points / Symbol	5	5	5
Result Length	157 symbols	135 symbols	111 symbols
Search Length	1175 symbols	1000 symbols	1100 symbols
Pulse Search	Selected	Selected	Selected
Constellation Sync Search	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0

Back to Preset to Standard Table.

	Preset-To-Standard Format
Parameter	GSM Global System for Mobile Communications: Originally developed as a pan-European standard for digital mobile telephony, GSM has become the world’s most widely used mobile system. It is used on the 900 MHz and 1800 MHz frequencies in Europe, Asia and Australia, and the 1900 MHz frequency in North America and Latin America.	CDPD	DECT Digital European Cordless Telecommunications
Demod Format	MSK Minimum Shift Keying Type 1	MSK Type 2	FSK Frequency Shift Keying: A form of modulation using multiple carrier frequencies to carry the digital information. The most common is the two frequency FSK system using the two frequencies to carry the binary ones and zeros. 2
Frequency Span	1.0 MHz Megahertz: A unit of frequency equal to one million hertz or cycles per second.	75 kHz	5 MHz
Symbol Rate	270.83 kHz	19.2 kHz	1.152 MHz
Filtering
- Measured	Cleared	Cleared	Cleared
- Reference	Gaussian	Gaussian	Gaussian
Alpha / BT	0.3	0.5	0.5
Points / Symbol	5	5	4
Result Length	148 symbols	378 symbols	480 symbols
Search Length	1434 symbols	400 symbols	11,200 symbols
Pulse Search	Selected	Cleared	Selected
Constellation Sync Search	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0

Back to Preset to Standard Table.

	Preset-To-Standard Format
Parameter	CDMA Code Division Multiple Access: One of several digital wireless transmission methods in which signals are encoded using a specific pseudo-random sequence, or code, to define a communication channel. A receiver, knowing the code, can use it to decode the received signal in the presence of other signals in the channel. This is one of several "spread spectrum" techniques, which allows multiple users to share the same radio frequency spectrum by assigning each active user an unique code. CDMA offers improved spectral efficiency over analog transmission in that it allows for greater frequency reuse. Other characteristics of CDMA systems reduce dropped calls, increase battery life and offer more secure transmission. See also IS-95. BASE	CDMA MOBILE	W-CDMA
Demod Format	QPSK Quadrature phase shift keying	OQPSK Offset Quadrature Phase Shift Keying: A type of QPSK modulation that offsets the bit streams on the I and Q channels by a half bit. This reduces amplitude fluctuations and helps improve spectral efficiency.	QPSK
Frequency Span	2.6 MHz	2.6 MHz	5 MHz
Symbol Rate	1.2288 MHz	1.2288 MHz	3.84 MHz
Filtering
- Measured	IS-95 base	Cleared	Root Cosine
	base EQ
- Reference	IS-95	IS-95	Cosine
	baseband	baseband
Alpha / BT	---	---	0.22
Points / Symbol	4	4	5
Result Length	200 symbols	200 symbols	200 symbols
Search Length	---	---	2560 Syms
Pulse Search	Cleared	Cleared	Cleared
Constellation Sync Search	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0
Bit Definitions	defined by IS-95	defined by IS-95	---

Back to Preset to Standard Table.

	Other Preset-To-Standard Formats
Parameter	APCO 25	APCO 25 P2 (HCPM)	APCO 25 P2 (HDQPSK)
Demod Format	4 FSK	CPM Continuous Phase Modulation (FM Frequency Modulation)	4 FSK
Frequency Span	40 kHz	25 kHz	25 kHz
Symbol Rate	4.8 kHz	6 kHz	6 kHz
Filtering
- Measured	rect	None	rect
- Reference	raised cosine	4RC	rect
Alpha / BT	0.2	0.75	1
Points / Symbol	5	5	5
Result Length	200 symbols	168 symbols	180 symbols
Search Length	400 symbols	380 symbols	380 symbols
Pulse Search	Cleared	Selected	Cleared
Constellation Sync Search	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0
CPM Auto {h1,h2}	---	Cleared, {1/3}[APCO-25 P2]	---

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	Digital Video J.83A/DVB-C (EUR)
Parameter	DVB 16	DVB 32	DVB 64	DVB 128	DVB 256	EU-DOCSIS 64QAM	EU-DOCSIS 256QAM
Demod Format	16 DVB QAM Quadrature Amplitude Modulation	32 DVB QAM	64 DVB QAM	128DVB QAM	256 DVB QAM	QAM 64	QAM 256
Frequency Span	8 MHz	8 MHz	8 MHz	8 MHz	8 MHz	8 MHz	8 MHz
Symbol Rate	6.9 MHz	6.9 MHz	6.9 MHz	6.9 MHz	6.9 MHz	6.952 MHz	6.952 MHz
Filtering
- Measured	root raised cosine	root raised cosine	root raised cosine	root raised cosine	root raised cosine	root raised cosine	root raised cosine
- Reference	raised cosine	raised cosine	raised cosine	raised cosine	raised cosine	raised cosine	raised cosine
Alpha / BT	0.15	0.15	0.15	0.15	0.15	0.15	0.15
Points / Symbol	2	2	2	2	2	2	2
Result Length	800	800	800	800	800	800	800
Search Length	---	---	---	---	---	---	---
Pulse Search	Cleared	Cleared	Cleared	Cleared	Cleared	Cleared	Cleared
Constellation Sync Search	Cleared	Cleared	Cleared	Cleared	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Cleared	Cleared	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0	0.0	0.0	0.0	0.0

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	Digital Video DVB-S2 Preset-To-Standard Formats
Parameter	16APSK	32APSK
Demod Format	16 APSK	32 APSK
Frequency Span	50 MHz	50 MHz
Symbol Rate	25 MHz	25 MHz
Filtering
- Measured	root raised cosine	root raised cosine
- Reference	raised cosine	raised cosine
Alpha / BT	.35	.35
Points / Symbol	5	5
Result Length	180 symbols	180 symbols
Search Length	1175 symbols	1175 symbols
Pulse Search	Cleared	Cleared
Constellation Sync Search	Cleared	Cleared
Normalize IQ Traces	Selected	Selected
Clock Adjust	0.0	0.0
Ring Ratio	See chart below	See chart below

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DVB APSK Ring Ratios
	16 APSK	32 APSK
Code Rate	R2 / R1	R2 / R1	R3 / R1
Code Rate 2/3	3.15	--	--
Code Rate 3/4	2.85	2.84	5.27
Code Rate 4/5	2.75	2.72	4.87
Code Rate 5/6	2.7	2.64	4.64
Code Rate 8/9	2.6	2.54	4.33
Code Rate 9/10	2.57	2.53	4.30

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	Digital Video J.83B/DOCSIS (NA)
Parameter	64QAM	256QAM
Demod Format	64QAM	256QAM
Frequency Span	8 MHz	8 MHz
Symbol Rate	5.056941 MHz	5.360537 MHz
Filtering
- Measured	root raised cosine	root raised cosine
- Reference	raised cosine	raised cosine
Alpha / BT	0.18	0.12
Points / Symbol	2	2
Result Length	800 symbols	800 symbols
Search Length	---	---
Pulse Search	Cleared	Cleared
Constellation Sync Search	Cleared	Cleared
Normalize IQ Traces	Selected	Selected
Clock Adjust	0.0	0.0

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	Digital Video J.83C/ISDB-C (JPN)
Parameter	64QAM
Demod Format	DVB QAM 64
Frequency Span	8 MHz
Symbol Rate	5.274 MHz
Filtering
- Measured	root raised cosine
- Reference	raised cosine
Alpha / BT	0.13
Points / Symbol	2
Result Length	800 symbols
Search Length	---
Pulse Search	Cleared
Constellation Sync Search	Cleared
Normalize IQ Traces	Selected
Clock Adjust	0.0

Back to Preset to Standard Table.

	Digital Video ATSC and ATSC-M/H Preset-To-Standard Formats
Parameter	DTV 8	DTV 16
Demod Format	VSB 8	VSB 16
Frequency Span	7 MHz	7 MHz
Symbol Rate	10.762 MHz	10.762 MHz
Filtering
- Measured	root cosine	root cosine
- Reference	cosine	cosine
Alpha / BT	0.1152	0.1152
Points / Symbol	2	2
Result Length	800	800
Search Length	---	---
Pulse Search	Cleared	Cleared
Constellation Sync Search	Cleared	Cleared
Normalize IQ Traces	Selected	Selected
Clock Adjust	0.0	0.0

Back to Preset to Standard Table.

	Preset-To-Standard Format
Parameter	EDGE Enhanced Data for Global Evolution: A technology that gives GSMA and TDMA similar capacity to handle services for the third generation of mobile telephony. EDGE was developed to enable the transmission of large amounts of data at a high speed, 384 kilobits per second. (It increases available time slots and data rates over existing wireless networks.)	Bluetooth	WLAN WLAN - Wireless Local Area Network: A system that includes the distribution system (DS), access points (APs), and portal entities. It is also the logical location of distribution and integration service functions of an extended service set (ESS). A WLAN system contains one or more APs and zero or more portals in addition to the DS. (802.11b)
Demod Format	EDGE (3p/8 8PSK)	FSK 2	QPSK
Frequency Span	625 kHz	2.5 MHz	36 MHz^‡
Symbol Rate	270.83 kHz	1 MHz	11 MHz
Filtering
- Measured	EDGE(Windowed RC Radio Configuration: defines the physical channel configuration of cdma2000 (IS-2000) signals. Each RC specifies a set of data rates based on either 9.6 or 14.4 kbps. RC1 is the backwards-compatible mode of cdmaOne for 9.6 kbps voice traffic. It includes 9.6, 4.8, 2.4, 1.2 kbps data rates and operates at Spread Rate 1 (SR1). RC3 is a cdma2000 specific configuration based on 9.6 kbps that also supports 4.8, 2.7, and 1.5 kbps for voice, while supporting data at 19.2, 38.4, 76.8, and 153.6 kbps. RC3 also operates at SR1. For more information see Keysight application note "Performing cdma2000 Measurements Today".)	Cleared	Cleared
- Reference	EDGE	Gaussian	Gaussian
Alpha / BT	0.25	0.5	0.5
Points / Symbol	1	2	4
Result Length	142 symbols	320 symbols	1000 Syms
Search Length	1434 Syms	1650 Syms	1434 Syms
Pulse Search	Selected	Cleared	Cleared
Constellation Sync Search	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0
Equalization	Cleared	¾	¾

‡ If the acquisition hardware does not support the default frequency span, then the span will be set to the closest span that the acquisition hardware can support.

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	Preset-To-Standard Format
Parameter	HIPERLAN/1 (LBR)	HIPERLAN/1 (HBR)	TETRA Trans-European Trunked Radio. A communications system standard.
Demod Format	FSK 2	MSK Type 1	pi/4 DQPSK
Frequency Span	18.7 MHz	36 MHz	40 kHz
Symbol Rate	1.4705875 MHz	23.5294 MHz	18 kHz
Filtering
- Measured	Cleared	Cleared	root cosine
- Reference	Rect	Gaussian	cosine
Alpha / BT	--	0.3	0.35
Points / Symbol	20	5	4
Result Length	1000 symbols	1000 symbols	231 symbols
Search Length	1434 Syms	1434 Syms	1300 symbols
Pulse Search	Cleared	Cleared	Selected
Constellation Sync Search	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0
Equalization	--	--	-

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	Preset-To-Standard Format
Parameter	VDL Mode 3
Demod Format	D8PSK
Frequency Span	25 kHz
Symbol Rate	10.5 kHz
Filtering
- Measured	Cleared
- Reference	raised cosine
Alpha / BT	0.6
Points / Symbol	5
Result Length	315 symbols
Search Length	120 msec
Pulse Search	Selected
Constellation Sync Search	Cleared
Normalize IQ Traces	Selected
Clock Adjust	0.0

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	Wi-SUN Preset-To-Standard Format
Parameter	2-FSK 50/1	2-FSK 100/1	2-FSK 100/0.5	2-FSK 150/0.5	2-FSK 200/1	2-FSK 200/0.5	2-FSK 300/0.5
Demod Format	2-FSK	2-FSK	2-FSK	2-FSK	2-FSK	2-FSK	2-FSK
Frequency Span	200 kHz	400 kHz	400 kHz	600 kHz	800 kHz	800 kHz	1.2 MHz
Symbol Rate	50 kHz	100 kHz	100 kHz	150 kHz	200 kHz	200 kHz	300 kHz
FSK Deviation Reference (Manual)	25 kHz	50 kHz	25 kHz	37.5 kHz	100 kHz	50 kHz	75 kHz
Filtering
- Measured	None	None	None	None	None	None	None
- Reference	Gaussian	Gaussian	Gaussian	Gaussian	Gaussian	Gaussian	Gaussian
Alpha / BT	0.5	0.5	0.5	0.5	0.5	0.5	0.5
Points / Symbol	20	20	20	20	20	20	20
Result Length	2560	2560	2560	2560	2560	2560	2560
Search Length	---	---	---	---	---	---	---
Pulse Search	Cleared	Cleared	Cleared	Cleared	Cleared	Cleared	Cleared
Constellation Sync Search	Cleared	Cleared	Cleared	Cleared	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Cleared	Cleared	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0	0.0	0.0	0.0	0.0

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	Preset-To-Standard Format
Parameter	ZigBee 868 MHz	ZigBee 915 MHz	ZigBee 2450 MHz
Demod Format	BPSK Binary phase shift keying - A type of phase modulation using 2 distinct carrier phases to signal ones and zeros.	BPSK	O-QPSK
Frequency Span	1 MHz	2 MHz	10 MHz
Symbol Rate	300 kHz	600 kHz	1 MHz
Filtering
- Measured	Cleared	Cleared	Cleared
- Reference	raised cosine	raised cosine	Half Sine
Alpha / BT	1	1	---
Points / Symbol	4	4	10
Result Length	1000 symbols	1000 symbols	1001 symbols
Search Length	10 ms	5 ms	3 ms
Pulse Search	Selected	Selected	Selected
Constellation Sync Search	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Selected
Clock Adjust	0.0	0.0	0.0

Back to Preset to Standard Table.

	Preset-To-Standard Format
Parameter	MIL-STD 1) abbrevation for "standard" or 2) Selective Transmit Diversity: A transmit diversity technique using multiple base stations to originate the signal and provide spatial diversity on the downlink. In STD, the transmitter selection is based on a QoS measurement made at the mobile station. See also transmit diversity, TDTD and TSTD. 188-181C:CPM(Opt 21)	SOQPSK-TG (IRIG 106-04)	SOQPSK-A	SOQPSK-B
Demod Format	CPM (FM)	Shaped OQPSK	Shaped OQPSK	Shaped OQPSK
Frequency Span	25 kHz	12.8 MHz	12.8 MHz	12.8 MHz
Symbol Rate	4.8 kHz	5 MHz	5 MHz	5 MHz
Filtering
- Measured	None	None	None	None
- Reference	1REC	SOQPSK-TG (IRIG 106-04)	SOQPSK-A	SOQPSK-B
Alpha / BT	0.35	0.35	0.35	0.35
Points / Symbol	5	10	10	10
Result Length	500 symbols	1000 symbols	1000 symbols	1000 symbols
Search Length	800 symbols	--	--	--
Pulse Search	Cleared	Cleared	Cleared	Cleared
Constellation Sync Search	Cleared	Cleared	Cleared	Cleared
Normalize IQ Traces	Selected	Selected	Selected	Selected
Clock Adjust	0.0	--	--	--
CPM Auto {h1,h2}	Selected, {5/16,6/16}	--	--	--
OQPSK Align I and Q	--	Cleared	Cleared	Cleared