Keysight x-series Instruction Manual

3 Short-Range Comms & IoT Mode
3.8 SEM Measurement
During the sweep, the following formula is executed for each point in the trace
operand, and the corresponding point is generated for the destination trace.
DestinationTrace = FirstTrace + Offset
The values of the trace points are assumed to be in dBm (as they are internally
stored) and the offset is in dB.
If a point in the trace operand is equal to maxtracevalue, the resultant point is also
maxtracevalue.
If a point in the trace operand is equal to mintracevalue, the resultant point is also
mintracevalue.
Example: If offset is 25 dB, then our destination trace will be higher than the
operand trace by 25 dB.
Note that the Second Trace operand is not used for this function.
Log Diff (Op1 - Op2 + Ref)
Offsets the difference between the First Trace operand and the Second Trace
operand by a reference and puts the result in the destination trace. This is like the A-
B+DL function in some older instruments. The Reference is entered on the
Reference control, which only appears when this math function is in force for the
selected trace. Each destination trace has its own reference.
Offsets the difference between the First Trace operand and the Second Trace
operand by a reference and puts the result in the destination trace. This is like the A-
B+DL function in some older instruments. The Reference is entered on the
Reference control, which only appears when this math function is in force for the
selected trace. Each destination trace has its own reference.
During the sweep, the following formula is executed for each point in the trace
operands, and the corresponding point is generated for the destination trace.
DestinationTrace = (FirstTrace - SecondTrace) + Reference
The values of the operand trace points are assumed to be in decibel units (as they
are internally stored) and the reference is in dBm so the result is in dBm.
Example: If the first operand trace 1 is at 5 dBm, the second operand trace 2 is at –5
dBm, and the reference is –25 dBm, then the destination trace will be –15 dBm.
Example: If the first operand trace1 is at 60 dBuV, the second operand trace 2 is at
50 dBuV, and the reference is 35 dBuV, then the destination trace will be 45 dBuV.
If a point in FirstTrace is equal to maxtracevalue, the resultant point is also
maxtracevalue.
If a point in FirstTrace is equal to mintracevalue, the resultant point is also
mintracevalue.
1208 Short Range Comms & IoT Mode User's &Programmer's Reference

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)