Rohde & Schwarz 1440.8002.02, Getting Started

Page: 19 / 95

Preparing for use
R&S
®
SMM100A
19 Getting Started 1179.1335.02 ─ 04
3.5 Considerations for test setup
Cable selection and electromagnetic interference (EMI)
Electromagnetic interference (EMI) can affect the measurement results.
To suppress electromagnetic radiation during operation:
●
Use high-quality shielded cables, especially for the following connector types:
– BNC
Double-shielded BNC cables.
How to:
"To connect to non-screwable connectors (BNC)" on page 23
– SMA
Double-shielded SMA cables.
How to:
"To connect to Ref In/Ref Out (reference = 1 GHz)" on page 25
– USB
Double-shielded USB cables.
How to:
Chapter 3.8, "Connecting USB devices" , on page 21.
See also chapter "Troubleshooting and Error Messages" in the user man-
ual.
– LAN
At least CAT6 STP cables.
How to:
Chapter 3.7, "Connecting to LAN" , on page 20
●
Always terminate open cable ends.
●
Ensure that connected external devices comply with EMC regulations.
●
Use cables of the same type and equal length for connection to the I/Q and
I/Q Bar interfaces of the instrument.
●
Use the cable R&S SMU-Z6 for connection to the Dig I/Q interfaces of the
instrument. The cable is available under material number 1415.0201.02.
●
Use the cable R&S DIGIQ-HS for connection to the HS Dig I/Q interfaces of
the instrument. The cable is available under material number 3641.2948.03.
How to:
Chapter 3.12, "Connecting to HS Dig I/Q" , on page 25
Signal input and output levels
Information on signal levels is provided in the data sheet. Keep the signal levels
within the specified ranges to avoid damage to the R&S
SMM100A and connec-
ted devices.
Considerations for test setup