Interfaces and Connectors
R&S
®
ETL
29Getting Started 2118.4130.02 ─ 04
Shock hazard
The used power supply (SELV) must fulfill the requirements for reinforced/double insu-
lation for main supply circuits in accordance to DIN/EN/IEC 61010 (UL 61010B.1,
CSA C22.2 No. 1010.1) or DIN/EN/IEC 60950 (UL 1950, CSA C22.2 No. 950). It is rec-
ommended to fuse the DC power supply according to Table 5-2. Before switching on
the R&S ETL, check the connection for correct polarity.
Operation in a DC network is not authorized
According to EN 61326:1997 + A1:1998 + A2:2001 + A3:2003, the DC input is not
authorized for operation in a DC network.
The DC cable length must not exceed 30 m.
In continuous operation, the current breaking current can differ from the rated breaking
current. For fuse selection, take the characteristics of the fuse into account.
Table 5-2: Fuse selection
Input voltage Max. current or power
11 V to 12.5 V max. 145 VA
12.5 V to 18.7 V max. 12 A
For information on switching the R&S ETL on or off, refer to Chapter 7, "Switching On
or Off the Instrument", on page 41. For an overview on available power supplies,
refer to Chapter 6.2, "Connecting to the Power Supply", on page 38.
5.2.3 GPIB Interface (B10)
Optional; installed in slot 3, see Figure 5-2.
In compliance with IEEE488 and SCPI. Used to connect a computer for remote control,
see also Chapter 6.1, "Preventing Electromagnetic Interference", on page 37.
For more details, refer to the user manual, chapter "Operating Concepts", or the help.
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