Putting the Instrument into Operation CMU
1100.4903.12 1.10 E-10
Putting the Instrument into Operation
Caution!
Please make sure to follow the instructions of the following sections in order not to
cause damage to the instrument or endanger people. This is of particular importance
when using the instrument for the first time.
Unpacking the Instrument
remove protective cabs
! Take the instrument out of the shipping box and check whether the
items listed in the packing list (see separate yellow sheet after the
title page of this manual) are all included.
! Remove the two protective caps from the front and rear of the CMU
and carefully check the instrument for damage.
Should the instrument be damaged, immediately notify the forwarder who shipped the instrument to you
and keep the box and packing material.
For further transport or shipment of the CMU the original packing should be used, too. It is
recommended to keep at least the two protective caps for front and rear side in order to prevent
damage to the controls and connectors. The caps are also necessary if the CMU is transported in its
transit case that can be ordered from Rohde & Schwarz.
Setting up the Instrument
Permissible operating positions of the CMU
• Horizontal position, standing on the feet.
• For applications in the laboratory or on a work bench, it is recommended that the support feet on
the bottom of the instrument be extended. For the LCD display, this provides the optimum viewing
angle which typically ranges from perpendicular to the display front to approximately 30° below.
Warning!
The feet must be fully folded in or out. Only in this way can the stability of CMU be
guaranteed and reliable operation be ensured. With the feet out, the weight of other
units put onto CMU must not exceed 30 kg. The units must be secured against
slipping (e.g. by locking the feet of the unit at the top side of the enclosure).
When moving the unit with the feet out, the feet might collapse and fold in. To avoid
injuries, the unit must therefore not be moved with the feet out.
Notes: For safe and convenient operation of the instrument note the following:
! Do not cover the rear and lateral ventilation holes.
! Note the permissible ambient temperature according to the data sheet.
! Avoid moisture condensation. If it however occurs, the instrument must be wiped dry
before switching on.
! Note the warm-up time of the temperature-controlled OCXO reference oscillator (Option
CMU-B11/B12), see data sheet.
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