Connectors

Connector routing is supported only on the M9484C. Connector routing is used to associate the physical connectors to features of signal generation.

Trigger	Events	STrig (Sync Trigger)
Slope Delay Hold Off Threshold	Function Polarity Delay Pulse Width	Source	Routing Output Polarity Output Delay	Input Delay Input Slope Input Threshold

Trigger

Events

Auxiliary LO	LF Out
LO 1 LO 2	State Amplitude DC Offset Source Frequency Frequency Increment Phase Offset Shape Shape Ramp Polarity Duty Cycle Function 1

Trigger

For the M9484C, Trigger Connectors can be used for routing as input or output. The available connectors are based on the instrument’s channels and options:

For channel 1 without Option AN1, and channels 2, 3, or 4, the connectors are:

Trig 1, Trig 2, Trig 3
For channel 1 with Option AN1 the connectors are:

Trig 1, Trig A, Trig B, Trig C, and AIO 1 through AIO 12

Connectors Trig A, Trig B, Trig C output bandwidth is limited to 100 MHz; when they are set for output, 3.3 V is the high voltage

Connectors AIO 1 through AIO 12 the input bandwidth is limited to 1 MHz

Via SCPI the connectors are referenced by a number; 1 to the maximum number of connectors. A SCPI command can be used to provide the connector label for the corresponding number.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:LABel?
SCPI Example	ROUT:CONN:RF1:TRIG1:LABel?
Notes	The query result will be the labels on the front or rear panel of the instrument. The return value is a string that may contain whitespace characters; for example “Trig A”. For M9484C: For Channel 1 without Option AN1, and channels 2, 3, 4: 1 = “Trig 1” 2 = “Trig 2” 3 = “Trig 3” For Channel 1 with Option AN1: 1 = “Trig 1” 4 = “Trig A” 5 = “Trig B” 6 = “Trig C” 7 = “AIO 1” 8 = “AIO 2” … 18 = “AIO 12” It is recommended that you do not query the connector labels for the specific options of the instrument. Attempting to query the label of a connector will raise error -200,”Execution Error”. See Query Options per Channel.
Dependencies	RF1:TRIG1\|4\|5\|6\|7\|8\|9\|10\|11\|12\|13\|14\|15\|16\|17\|18 are available connectors when Option AN1 is present. RF1 available connectors without Option AN1 are TRIG[1]\|2\|3. RF2\|3\|4 available connectors are TRIG[1]\|2\|3. Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error
State Saved	N/A
Initial S/W Revision	A.09.00

Trigger Input

Supported only on the M9484C.

View image.

The physical trigger connectors can be used as inputs or outputs. As trigger inputs their operation is applicable when the Configuration Group for the channel is Independent. When the Configuration Group is not Independent see Global Trigger. For instruments with Option 8SG the trigger input can be directed to each Signal.

When a trigger connector is used as an input, the following settings can be configured.

Slope

For the M9484C, sets the polarity of the signal input at the channel’s trigger connector.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:INPut:SLOPe POSitive\|NEGative :ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:INPut:SLOPe?
SCPI Example	ROUT:CONN:RF1:TRIG1:INP:SLOP NEG ROUT:CONN:RF1:TRIG1:INP:SLOP?
Notes	Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error.
Preset	POSitive
Range	Negative \| Positive
State Saved	Yes
Initial S/W Revision	A.09.00

Delay

For the M9484C, sets the input delay of a trigger connector.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:INPut:DELay timeSec :ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:INPut:DELay?
SCPI Example	ROUT:CONN:RF1:TRIG1:INP:DEL 5 us ROUT:CONN:RF1:TRIG1:INP:DEL?
Notes	Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error.
Preset	0 s
State Saved	Yes
Min	0 s
Max	6.825 us
Resolution	1.666… ns
Initial S/W Revision	A.09.00

Hold Off

For the M9484C, sets the minimum time after an edge trigger before the system can perceive the next edge trigger. A trigger edge during this time period will be lost. This feature helps avoid double-triggering with a noisy or “bouncing” input signal.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:INPut:HOLDoff timeSec :ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:INPut:HOLDoff?
SCPI Example	ROUT:CONN:RF1:TRIG1:INP:HOLD 2 s ROUT:CONN:RF1:TRIG1:INP:HOLD?
Notes	Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error.
Preset	10 ns
State Saved	Yes
Min	10 ns
Max	3.5 s
Resolution	1.666… ns
Initial S/W Revision	A.09.00

Threshold

For the M9484C, sets the level above/below which the input signal is considered high vs low. Some connectors have fixed threshold levels.

For instruments that have Trig2 and Trig3, the threshold is fixed at 1.8 V CMOS.

For instruments that have AIO1 through AIO12, the threshold is fixed at 3.3 V CMOS.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:INPut:THReshold <voltage> :ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:INPut:THReshold?
SCPI Example	ROUT:CONN:RF1:TRIG:INP:THR 1.5 V ROUT:CONN:RF1:TRIG:INP:THR?
Notes	Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error. Attempting to change value of TRIG<number> for connectors that have fixed values will generate an error.
Preset	1 V
State Saved	Yes
Min	Trig1: 0.5 V Trig2, Trig3: 1.8 V (Fixed) Trig4, Trig5, Trig6: 0.5 V Trig7 – Trig 18: 3.3 V (Fixed)
Max	Trig1: 2.5 V Trig2, Trig3: 1.8 V (Fixed) Trig4, Trig5, Trig6: 5 V Trig7 – Trig 18: 3.3 V (Fixed)
Resolution	Trig1: 100 mV Trig4, Trig5, Trig6: 9.765625 mV
State Saved	Yes
Initial S/W Revision	A.09.00

Trigger Output

Supported only on the M9484C.

View image.

The physical trigger connectors can be used as inputs or outputs. When a trigger connector is used as an output, the following settings can be configured.

Function

For the M9484C, routes a signal to a trigger connector for output.

Output routing options:

None (NONE) - No signals are routed to the connector. The connector may be an input.
Source Settled (SETTled) – Signals that the RF output is settled (frequency, phase, and amplitude are all within specification).
Event 1-3 (EVENt1|EVENt2|EVENt3) – Monitor the signal output on one of the Event outputs. The toggle rate will be 300 MHz maximum (3.333... ns) and the resolution will be 600 MHz (1.666... ns).

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:OUTPut NONE\|SETTled\|EVENt<1-3> :ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:OUTPut?
SCPI Example	ROUT:CONN:RF1:TRIG1:OUTP EVEN1 ROUT:CONN:RF1:TRIG1:OUTP?
Notes	Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error
Couplings	If the specified connector was being used as an input by any feature, then the trigger input type for those feature(s) is set to Trigger Key and a Settings Conflict error message is generated.
Preset	NONE
Range	None \| Source Settled \| Event1 \| Event2 \| Event3
State Saved	Yes
Initial S/W Revision	A.09.00

Polarity

For the M9484C, sets the polarity of the signal output at the trigger connector.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:OUTPut:POLarity POSitive\|NEGative :ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:OUTPut:POLarity?
SCPI Example	ROUT:CONN:RF1:TRIG1:OUTP:POL POS ROUT:CONN:RF1:TRIG1:OUTP:POL?
Notes	Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error.
Preset	POSitive
Range	Negative \| Positive
State Saved	Yes
Initial S/W Revision	A.09.00

Delay

For the M9484C, sets the output delay of a trigger connector, its value is independent of any other delays applied to the signal being output.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:OUTPut:DELay timeSec :ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:OUTPut:DELay?
SCPI Example	ROUT:CONN:RF1:TRIG1:OUTP:DEL 5 us ROUT:CONN:RF1:TRIG1:OUTP:DEL?
Notes	Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error.
Preset	0 s
State Saved	Yes
Min	0 s
Max	6.825 us
Resolution	1.666… ns
Initial S/W Revision	A.09.00

Pulse Width

For the M9484C, sets the minimum duration of the trigger output level, helping make sure that outputs are wide enough in time to trigger external equipment. Note: If the trigger event transitions to inactive and back to active during the initial width, that event is lost and does not extend the width.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:OUTPut:WIDTh timeSec :ROUTe[:CONNectors][:RF<channel>]:TRIG<connector>:OUTPut:WIDTh?
SCPI Example	ROUT:CONN:RF1:TRIG1:OUTP:WIDT 5 s ROUT:CONN:RF1:TRIG1:OUTP:WIDT?
Notes	Attempting to send TRIG<number> for connectors that don’t exist on the instrument will generate an Execution Error.
Preset	50 ns
State Saved	Yes
Min	10 ns
Max	7 s
Resolution	1.666… ns to double precision
Initial S/W Revision	A.09.00

Events

Supported only on the M9484C.

View image.

These three, output-only connectors have precise timing (at 3 GHz) for markers on baseband signals. The maximum rate of change is 600 MHz. If an Event output is configured to change too quickly, the output will only change on 600 MHz boundaries, regaining the proper level and precise timing wherever the rate of change is 600 MHz or less.

Routing

For the M9484C, Event connector routing can output markers from one or more signals, given the following criteria:

For each connector, only one marker can be selected from each signal.
Only per-signal marker selections for a connector can be ORed together. Note: If any are asserted, the output is asserted.
Per-signal marker selections cannot be combined with None or the single uniform Marker for all signals.

Event routing options:

None (NONE) - The connector is off.
Signal Marker Source(S<s>M<m>) - The Event output is asserted when the marker m from signal s is asserted. If more than one signal/marker combination is selected, then if any of them are asserted the connector output is asserted. Only one marker can be chosen from any one signal, so the list of marker selections is limited to the number of signals.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:EVENt{1:3} NONE\|M1\|M2\|M3\|M4\|signalMarkerSource1[,signalMarkerSource2,…[,signalMarkerSource<signalCount>]] :ROUTe[:CONNectors][:RF<channel>]:EVENt{1:3}? signalMarkerSource<n>=S1M1\|S2M1\|…\|S8M4
SCPI Example	ROUT:CONN:RF1:EVEN1 S1M2 ROUT:CONN:RF1:EVEN1 S1M1,S2M1,S3M2 ROUT:CONN:RF1:EVEN1?
Notes	This SCPI command is not additive; sending it clears the Event’s previous output routing and sets them only to the options contained in the command. Additive tweaking of the Event’s output routing can be done manually on the front panel display. Querying the event will return the sorted order of the list of signalMarkerSource items selected.
Preset	Event1: S1M1 Event2: S1M2 Event3: S1M3
Range	None \| Marker1 \| Marker2 \| Marker3 \| Marker4 \| Signal Marker Source<n>
State Saved	Yes
Initial S/W Revision	A.09.00

Output Polarity

For the M9484C, sets the polarity of the signal output at the channel’s event connector.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:EVENt{1:3}:POLarity POSitive\|NEGative :ROUTe[:CONNectors][:RF<channel>]:EVENt{1:3}:POLarity?
SCPI Example	ROUT:CONN:RF1:EVEN1:POL NEG ROUT:CONN:RF1:EVEN1:POL?
Preset	POSitive
Range	Negative \| Positive
State Saved	Yes
Initial S/W Revision	A.09.00

Output Delay

For the M9484C, sets the output delay at the channel’s event connector, its value is independent of any other delays applied to the signal being output.

SCPI Command	:ROUTe[:CONNectors][:RF<channel>]:EVENt{1:3}:DELay timeSec :ROUTe[:CONNectors][:RF<channel>]:EVENt{1:3}:DELay?
SCPI Example	ROUT:CONN:RF1:EVEN1:DEL 50 ns ROUT:CONN:RF1:EVEN1:DEL?
Preset	0 s
State Saved	Yes
Min	0 s
Max	32.3958333333333 ns
Resolution	52.0833… ps
Initial S/W Revision	A.09.00
Modified S/W Revision	A.10.00 Max value changed to 32.3958333333333 ns

Auxiliary LO

For M9484C with Option AL2.

View image.

For M9484C with option AL2. The instrument contains two connectors labeled LO1 and LO2 for providing an Auxiliary Local Oscillator output. Each connector can be off, or provide a CW frequency of 2.4 GHz, 4.8 GHz, 9.6 GHz, or 19.2 GHz. If you are not using the output, place the setting in off to minimize emissions.

When using V3080A, the Auxiliary LO connector(s) are used for interfacing with V3080A. With a V3080A connected the auxiliary LO port is set to 9.6 GHz and not changeable. When one V3080A is connected to the instrument the LO1 will be used, if a second V3080A is connected LO2 will be used.

SCPI Command	:ROUTe[:CONNectors]:ALOScillator[1]\|2 OFF\|F2_4\|F4_8\|F9_6\|F19_2 :ROUTe[:CONNectors]:ALOScillator[1]\|2?
SCPI Example	ROUT:ALOS2 F9_6
Notes	If Option AL2 is not present, attempting to change ALOS raises error 703,"Feature not supported; Auxiliary LO unavailable on this instrument"
Couplings	When one or more V3080A are in use the Auxiliary LO is set to 9.6 GHz, and not changeable. For the first V3080A detected ALOS1 will be set to 9.6 GHz, when a second V3080A is detected ALOS2 will be set to 9.6 GHz. Attempting to change the Auxiliary LO with V3080A connected will raise the error "-221, Settings conflict; cannot change Auxiliary LO with V3080A connected"
Preset	If no V3080As are connected both ALSO1 and ALSO2 are OFF. If one V3080A is connected: ALOS1 is F9_6 ALOS2 is OFF If two V3080As are connected both ALSO1 and ALSO2 are F9_6.
State Saved	Yes
Initial S/W Revision	A.11.50

LF Out

For M9484C with Option AN1.

View image.

LF Out, Low Frequency Output, is a connector that provides function generator capability. This function generator is independent of the RF Output.

State

Enables, or disables, the output on the LF Out connector.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:STATe ON\|OFF\|1\|0 [:SOURce][:RF<channel>]:LFOutput:STATe?
SCPI Example	LFO:STAT ON LFO:STAT?
Notes	For M9484C without option AN1, attempting to set the state on will raise the error 703, Feature not supported; LF Out State unavailable, option AN1 is required. For M9383B and M9384B, attempting to set state on will raise the error 703, Feature not supported; LF Out State unavailable on this instrument.
Preset	OFF
State Saved	Yes
Initial S/W Revision	A.11.50

Amplitude

This setting determines the amplitude of the signal at the LF Out connector. The total of DC Offset and amplitude cannot exceed the maximum amplitude value. If the source is DC, then only the DC Offset can be used. The value is for 50 Ohm load impedance.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:AMPLitude <voltage> [:SOURce][:RF<channel>]:LFOutput:AMPLitude?
SCPI Example	LFO:AMPL 2V LFO:AMPL?
Preset	0 V
State Saved	Yes
Min	0
Max	5 Vp
Resolution	0.001 V
Initial S/W Revision	A.11.50

DC Offset

This setting determines the DC Offset (in volts) of the signal at the LF Out connector. The total of DC Offset and amplitude cannot exceed the maximum amplitude value. If the source is DC, then only the DC Offset can be used. The value is for 50 Ohm load impedance.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:OFFSet <voltage> [:SOURce][:RF<channel>]:LFOutput:OFFSet?
SCPI Example	LFO:OFFS -2V LFO:OFFS?
Preset	0 V
State Saved	Yes
Min	-5 V
Max	5 V
Resolution	0.001 V
Initial S/W Revision	A.11.50

Source

This setting determines the source of the LF Out.

DC (DC) – Selects DC as the modulation source, which means that the LF Output DC Offset sets a continuous output voltage.

Function 1 (FUNCtion[1]) – Selects function generator 1 as the modulation source.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:SOURce DC\|FUNCtion[1] [:SOURce][:RF<channel>]:LFOutput:SOURce?
SCPI Example	LFO:SOUR DC LFO:SOUR?
Preset	FUNC1
State Saved	Yes
Initial S/W Revision	A.11.50

Function 1

Frequency

Sets the frequency modulation rate for the waveform on the selected internal function generator.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:FREQuency <frequency> [:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:FREQuency?
SCPI Example	LFO:FUNC:FREQ 30 LFO:FUNC:FREQ?
Preset	400 Hz
State Saved	Yes
Min	M9484C: 0.01 Hz
Max	1 MHz M9484C: 10 MHz
Resolution	M9484C: 0.01 Hz
Initial S/W Revision	A.11.50

Frequency Increment

Remote command only.

Sets the step increment for the internal frequency.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:FREQuency:STEP[:INCRement] <frequency> [:SOURce][:RF<channel>]:LFOutput:FREQuency:STEP[:INCRement]?
SCPI Example	LFO:FREQ:STEP 10 KHZ LFO:FREQ:STEP?
Dependencies	Default value of 500 Hz is set by Restore System Defaults
Preset	500 Hz
State Saved	Persistent, survives preset and power cycle but not saved in the instrument state.
Min	M9484C: 0.01 Hz
Max	1 MHz
Resolution	M9484C: 0.01 Hz
Initial S/W Revision	A.11.50

Phase Offset

Sets the phase offset (in radians) of the output. The value can be set in degrees as well via both GUI and SCPI.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:POFFset <angle> [:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:POFFset?
SCPI Example	LFO:FUNC:POFF 2 LFO:FUNC:POFF?
Preset	0
State Saved	Yes
Min	-6.29 rad
Max	6.29 rad
Resolution	0.001 rad
Initial S/W Revision	A.11.50

Shape

Sets the LF Output waveform type.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:SHAPe SINE\|TRIangle\|PULSe\|RAMP [:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:SHAPe?
SCPI Example	LFO:FUNC:SHAP SINE LFO:FUNC:SHAP?
Preset	SINE
State Saved	Yes
Initial S/W Revision	A.11.50

Shape Ramp Polarity

Remote command only.

Sets the ramp direction when :LFOutput:FUNCtion[1]|2:SHAPe is set to RAMP.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:SHAPe:RAMP POSitive\|NEGative [:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:SHAPe:RAMP?
SCPI Example	LFO:FUNC:SHAP:RAMP NEG LFO:FUNC:SHAP:RAMP?
Preset	POSitive
State Saved	Yes
Initial S/W Revision	A.11.50

Duty Cycle

Sets the duty cycle in percent for Pulse mode.

SCPI Command	[:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:DCYCle <real> [:SOURce][:RF<channel>]:LFOutput:FUNCtion[1]\|2:DCYCle?
SCPI Example	LFO:FUNC:DCYC 20 LFO:FUNC:DCYC?
Preset	50
State Saved	Yes
Min	0
Max	100
Resolution	0.000000000001
Initial S/W Revision	A.11.50