3.5 Basic Operations
3-45 ZM2376
Drive only at measurement: Triggered drive setting menu
Use the triggered drive to add the measurement signal to the DUT only during the required period.
Press the _SHIFT_
+ [TRIG MODE]
keys to display the trigger setting menu, and select S.Sync
with a numeric key, and the triggered drive setting menu (see below) will be displayed.
Source Sync:ON Current setting
0)OFF 1)ON Options
OFF Disables triggered drive.
Outputs measurement signal at all times.
ON Enables triggered drive.
Drives the DUT in synchronization with the trigger, until the signal has been
acquired from the trigger. Once the measurement is completed, the measurement
signal is not output until the next trigger.
If a setting is made or the EXIT operation is performed, one-previous menu comes back.
SOURCE SYNC lamp
The SOURCE SYNC lamp lights up when the triggered drive is enabled.
The triggered drive has the following advantages.
Reduction of measurement contact degradation
Since the measurement signal can be output only during the required period after the DUT is
connected, the damage to the contact caused by connecting or disconnecting the DUT can be
reduced. With the measurement signal output, connecting or disconnecting the low impedance
DUT (for example, large capacitance) or inductor may damage the measurement contact.
Reduction of interference caused by close installation
When two or more instruments are installed closely, if the measurement timing is shifted so
that the measurement signals do not overlap, the disturbance from other ZM2376 can be
reduced.
Reduction of variation in short-time measurement
Since the measurement start phase of signal is always the same, the variation of measured
value becomes small even when the settling time is insufficient. If you want to just monitor the
variation of value and do not need an accurate value, you can shorten the measurement time by
understanding the correlation with the correct value. This is particularly useful for DUTs with
hysteresis characteristics.
The DC bias is maintained constant regardless of the triggered drive setting.
When measuring a capacitance with the internal DC bias turned on, charge the
DUT to the same voltage as the bias voltage of the LCR meter before connecting
the DUT. Otherwise, a large charge-discharging current flows even with triggered
drive when the DUT is connected, which may damage the measurement contact.
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