Interfaces and Connectors
R&S
®
SFE100
20
Getting Started 2112.4122.62 ─ 13
5.1.6 USB Interfaces
.
Two USB (universal serial bus) interfaces of the type A (host USB) are provided. Use
the interfaces to connect external devices like a keyboard, mouse, printer, memory
stick (
Chapter 6.3, "Connecting External Devices"
on page 29), or to perform a firm-
ware update.
Upper connector = port 1
Lower connector = port 3
Electromagnetic interference (EMI) can affect the measurement results. To avoid any
impact, make sure that the following conditions are met:
●
Use suitable double-shielded cables.
●
Do not use USB connecting cables exceeding 1 m in length.
●
Use only USB devices that remain within the permissible EMI limits.
Table 5-1: Pin assignment
Pin
Abbreviation
Signal
1
PWR
+ 5
V
/ + 0.5
A max!
2
D-
Data -
3
D+
Data +
4
GND SHIELD
Ground
Front Panel
