Rohde Schwarz Rohde & Schwarz HMO1002 2-channel oscilloscope, Digital Storage oscilloscope, 21-1002-RS00 데이터 시트

  General infor-

mation regar-

ding the CE 

marking

2004/108/EG; 

2006/95/EG

DIN EN 61010-1; VDE 0411-1: 07/2011

DIN EN 61000-6-3: 09/2007 (IEC/CISPR22, Klasse / Class / Classe / classe B)

VDE 0839-6-3: 04/2007

DIN EN 61000-6-2; VDE 0839-6-2: 03/2006

DIN EN 61000-3-2; VDE 0838-2: 06/2009

DIN EN 61000-3-3; VDE 0838-3: 03/2010

The instruments fulfill the regulations of the EMC directive. The conformity 
test based on the actual generic- and product standards. In cases where 
different limit values are applicable, the instrument applies the severer 
standard. For emission the limits for residential, commercial and light 
industry are applied. Regarding the immunity (susceptibility) the limits for 
industrial environment have been used.

The measuring- and data lines of the instrument have much influence on 
emission and immunity and therefore on meeting the acceptance limits. 
For different applications the lines and/or cables used may be different. 
For measurement operation the following hints and conditions regarding 
emission and immunity should be observed: 

1. Data cables
For the connection between instrument interfaces and external devices, 
(computer, printer etc.) sufficiently screened cables must be used. With-
out a special instruction in the manual for a reduced cable length, the 
maximum cable length of a dataline must be less than 3 meters and not 
be used outside buildings. If an interface has several connectors only one 
connector must have a connection to a cable.

Basically interconnections must have a double screening. 

2. Signal cables
Basically test leads for signal interconnection between test point and in-
strument should be as short as possible. Without instruction in the manual 
for a shorter length, signal lines must be less than 3 meters and not be 
used outside buildings.

Signal lines must screened (coaxial cable - RG58/U). A proper ground con-
nection is required. In combination with signal generators double screened 
cables (RG223/U, RG214/U) must be used.

3. Influence on measuring instruments
Under the presence of strong high frequency electric or magnetic fields, 
even with careful setup of the measuring equipment, influence of such 
signals is unavoidable.
This will not cause damage or put the instrument out of operation. Small 
deviations of the measuring value (reading) exceeding the instruments 
specifications may result from such conditions in individual cases.

4.1 Electromagnetic RF field
The influence of electric and magnetic RF fields may become visible (e.g. 
RF superimposed), if the field intensity is high. In most cases the coupling 
into the oscilloscope takes place via the device under test, mains/line 
supply, test leads, control cables and/or radiation. The device under test as 
well as the oscilloscope may be effected by such fields.

Although the interior of the oscilloscope is screened by the cabinet, direct 
radiation can occur via the CRT gap. As the bandwidth of each amplifier 
stage is higher than the total –3 dB bandwidth of the oscilloscope, the 
influence of RF fields of even higher frequencies may be noticeable. 

4.2 Electrical fast transients / electrostatic discharge
Electrical fast transient signals (burst) may be coupled into the oscillo-
scope directly via the mains/line supply, or indirectly via test leads and/
or control cables. Due to the high trigger and input sensitivity of the 
oscilloscopes, such normally high signals may effect the trigger unit and/
or may become visible on the TFT, which is unavoidable. These effects can 
also be caused by direct or indirect electrostatic discharge.