R&S FSH
Cable Measurements
1145.5973.12 4.127
E-14
The following options are possible:
Select the highlighted marker as the active marker
by pressing the ENTER key.
Select another marker by means of the rotary knob
or the cursor keys and confirm your selection with
the ENTER key.
Activate ALL MARKERS ON by means of the
rotary knob or the cursor keys.
All markers are switched on and positioned to the
highest values of the trace.
After a marker is activated, its position is indicated in the value entry box. To vary the marker position,
use the number keys to enter a distance (e.g. 11.5 m), or move the marker pixel by pixel with the rotary
knob, or move it in steps of 10% of the displayed cable length by means of the cursor keys. For fast
marker positioning, it is recommended that first coarse adjustment be performed with the cursor keys,
and then fine adjustment with the rotary knob.
The value entry box for the marker position is closed when the marker position is confirmed with the
ENTER key.
With the MARKER OFFSET function, a new reference plane can be defined for the distance-to-fault
measurement. If a marker offset is defined, all distance values output by the R&S FSH are referenced
to the position of the offset marker.
Automatic marker positioning (PEAK, NEXT PEAK, MINIMUM) is always performed on the active
marker. The active marker is indicated ahead of the selected function (example: D1: PEAK). The zoom
function, too, acts on the active marker.
Measuring spectrum and reflection
Apart from distance-to-fault measurements for cables, the R&S FSH also provides an overview
measurement for the frequency spectrum and reflections using the same settings – for example the
center frequency and span. The spectrum display mode is useful for detecting spurious signals.
External signals, e.g. from other transmitters, affect distance-to-fault measurements as they are picked
up at the R&S FSH’s RF input and are superimposed on the measurement signal. Reflection
measurements are useful, e.g. for checking the matching of an antenna connected to the cable.
Press the MEAS MODE softkey.
The R&S FSH opens the submenu with the various
measurement mode options.
Select the mode you want using the rotary knob or
the cursor keys.
Confirm your selection by pressing the MEAS
MODE softkey again or by pressing the ENTER
key.
深圳市盛腾仪器仪表有限公司
Tel:0755-83589391
Fax:0755-83539691
Website: www.Sengt.com
