R&S esu, Быстрый старт

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R&S ESU Front and Rear Panel
Rear Panel Connections
1.14 Quick Start Guide 1302.6163.62 - 04
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 ESU 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. 1-8 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.
USER PORT
The user interface is a 25 pin Cannon connector which provides access to the user port. The
port is 8 bits wide (A0 - A7) and can be configured either as output or as input. The voltage
levels are TTL levels (Low < 0,4 V, High > 2 V).
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