Rohde & Schwarz HMC8012, Руководство пользователя

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Mathematical Functions
the soft menu AUTO RESET is available. If the Auto Reset
function is activated (ON), the statistic measurement points
(COUNT) will be not reset in Auto Range mode.
6.2 Measuring Limits (Limits)
The soft menu LIMIT allows you to select the HIGH LIMIT
and LOW LIMIT for a measurement. Based on these li-
mits, a test can be evaluated as passed or not passed. The
limits can be activated (ON) or deactivated (OFF) via soft
menu key LIMITS. The limits will be displayed below the
main measurement value (Main). If a value falls below or
exceeds the
limits during a test, it will be reflected by the
color display of the measurement value. If the limits are ob-
served, the measurement value is displayed in green. If the
value falls below or exceeds the set limits, the limit value
will be displayed in red. In addition, you can activate (ON)
or deactivate (OFF) an error tone (soft menu key BEEPER)
which will sound when the value exceeds or falls below the
set limits.
Fig. 6.2: Limits menu
Fig. 6.3: Value exceeds the limit
If the instrument shows OVER RANGE on the display, the statistic
measurement values can be not captured. This values will be dis-
played as INVALID COUNT in red.
6.3 Data Logging
The soft menu LOGGING allows you to start the capture
of measurement values and to select various settings. Use
the soft menu key LOGGING to activate (ON) or deactivate
(Off) the capture and the storage of measurement values.
Use the soft menu STORAGE to select the storage location
(Internal/
USB stick), the file name ( FILE NAME) and the file
format (CSV/TXT). The soft menu key Interval and the knob
allow you to select a measurement interval. The measu-
rement interval describes the time between the recorded
measurements. For instance, if the function Interval is set
to 2, all 2s will be included in the measurements.
The soft menu MODE offers three different logging mo-
des. Select the function U if you intend to perform an
infinite data capture. The limiting factor in this context is
the size of the internal storage (maximum of 50,000 mea-
surement points) or of the connected USB stick (4 Gbyte
max., FAT/FAT32 formatted). If the function N is activated,
the soft menu key COUNT and the knob enable you to set
the number of measurement values to be captured. For
instance, if you set an INTERVAL of 2 s and a COUNT of 5,
5 measurement values will be captured in intervals of 2 s.
If the function T is activated, the soft menu key TIME and
the knob enable you to set the duration of the capture of
the measurement values.
External USB hard drives (or USB extensions) are not supported.
Only USB flash drives with FAT/FAT32 formatting (4 Gbyte max.)
are recognized by the R&S®HMC8012.
Fig. 6.4: Logging menu setting
The log function is active if the color of the LOG display in the sta-
tus bar has changed to green, or inactive if it is white.
Depending on which settings for the time interval and the number
of measurement values to be captured have been confirmed in the
logging menu, these settings will be synchronized with the trigger
menu (see chapter Instrument Functions).