SPM-32A ... SPM-36A 4.2 Operation and features
4-23
–75 Ω: coaxial input
– 150 or 600 Ω: balanced input (BAL).
Example: input impedance of 600 Ω/balanced input:
A small square next to the lettering on the right-hand edge of
the display shows which input impedance has been
selected. A small square is also displayed next to "BAL".
Normally the input type and the input impedance are
selected together. It is possible to select them separately.
The coaxial input can thus have an input impedance of
150 Ω or 600 Ω. This should not be done at high frequencies
as errors greater than those stated in the specifications will
be introduced.
You can select the other input type by entering:
The input impedance remains the same.
The balanced input has been selected when a small square
appears next to "BAL". If there is no square the coaxial input
has been selected.
3
600
*
*
Z/∞
BAL/UNBAL
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