TABLE OF CONTENTS 
vi 
Avoid Unsafe Equipment 
The equipment may be unsafe if any of the following statements apply: 
 Equipment shows visible damage. 
 Equipment has failed to perform an intended operation. 
 Equipment has been stored in unfavorable conditions. 
 Equipment has been subjected to severe physical stress. 
If in any doubt as to the serviceability of the equipment, don't use it. Get it properly checked out by a 
qualified service technician. 
Live Conductors 
When the equipment is connected to its measurement inputs or supply, the opening of covers or 
removal of parts could expose live conductors. The equipment must be disconnected from all power 
and signal sources before it is opened for any adjustment, replacement, maintenance or repair.  
Adjustments, maintenance or repair must only be done by qualified personnel, who should refer to the 
relevant maintenance documentation. 
Equipment Modification 
To avoid introducing safety hazards, never install non-standard parts in the equipment, or make any 
unauthorized modification.  To maintain safety, always return the equipment to your 
SIGNAL RECOVERY service provider for service and repair. 
European WEEE Directive 
This product is subject to Directive 2002/96/EC of the European Parliament and the Council of the 
European Union on waste electrical and electronic equipment (WEEE) and, in jurisdictions adopting 
that Directive, is marked as being put on the market after August 13, 2005, and should not be disposed 
of as unsorted municipal waste. Please use your local WEEE collection facilities for the disposal of this 
product and otherwise observe all applicable requirements. 
FCC Notice 
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used 
in accordance with this instruction manual, may cause harmful interference with radio communications. 
Operation of this equipment in a residential area is likely to cause harmful interference, in which case 
the user is required to correct the interference at his own expense. 
Acknowledgment 
Operation of the Ethernet interface in the model 7230 relies on software code developed by the 
Swedish Institute of Computer Science, copyright 2001-2004, all rights reserved. In accordance with 
the license under which it is used, we reproduce here the following disclaimer:  
 
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS  
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.