Rohde & Schwarz FSQ series, Quick Start Manual

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R&S FSQ Front and Rear Panel
Rear Panel Connections
1.14 Quick Start Guide 1313.9652.62 - 02
Input for External Trigger (EXT TRIG/GATE IN)
The EXT TRIG/GATE IN female connector is used to control the measurement by means of
an external signal.
The voltage levels are adjustable (0.5 V to 3.5 V). The typical input impedance is 10 k
Ω
.
USB Interface
The R&S FSQ provides a USB female connector at the rear panel for connecting two USB
devices (upper connector USB 1.1, lower connector USB 2.0).
Fig. 1-7 USB connector assignment
Voltage output (SWEEP)
At this female BNC connector, sawtooth voltage proportional to the frequency is provided. The
output voltage ranges from 0 to 5 V.
Trigger Port (Option R&S FSP-B28)
The 25-pin trigger port female connector (option R&S FSP-B28) provides a signal at pin 21
that signals that the instrument is ready to receive a trigger pulse. This signal takes into
consideration the instrument's internal waiting and settling times.
Use suitable double shielded cables. Passive USB connecting cables must not exceed 1 m
in length.
Use only USB devices that keep the permissible EMI limits.
Pin Signal
1 + 5 V USB0
2 USBDATA0 -
3 US
4 GND
5 + 5 V USB1
6 USBDATA1 -
7 US
8 GND
1 2 3 4
5 6 7 8