LCX_UserManual_en_08_1.pdf - 第72页
Instrument functions R&S ® LCX Series 72 User Manual 1 179.2260.02 ─ 08 Note: The trigger icon also turns white during the measurement cycle. If you have set a delay time, the trigger icon turns yellow until the dela…
Instrument functions
R&S
®
LCX Series
71User Manual 1179.2260.02 ─ 08
Interfaces for external trigger signals
You have two options to apply an external trigger signal:
●
Trigger Input connector
Assign an external trigger signal to the Trigger Input connector at the rear panel.
The rising edge of the digital signal triggers the measurement at the TTL level of
+5 V.
●
Trigger signal input of the binning interface (option: R&S LCX-K107)
The binning interface provides the digital trigger signal at pin 9 of the digital I/O
port, see Binning > Assignment of the binning interface.
The falling edge of the signal triggers the measurement.
Using the continuous measurement mode
To measure a component sample in the default continuous measurement mode:
1. If the [Meas. Mode] key at the front panel lights up, press it to switch to continuous
mode.
The R&S LCX measures continuously and updates the readings according to
selected measurement speed, see "Speed" on page 80.
2. Press the [Hold] key to keep the range setting constant.
The [Hold] key lights up. You can use the function, e.g. to measure a batch of the
same components.
3. To disable automatic range selection, press the [Hold] key again.
The key no longer lights up.
Using the manual trigger mode
This example describes the steps to be taken, for measuring a component sample at a
series of working points, triggered manually:
1. Press the [Meas. Mode] key at the front panel.
The key lights up. The R&S LCX stops the continuous measurement, switches to
triggered mode and waits for a trigger event.
2. To set a time delay between the initiated trigger and the measurment start:
a) Press the [settings] key at the front panel.
b) Select the "Measurement".
c) Select "Trigger Delay".
d) Enter the time using the keypad on the screen.
e)
Confirm with
.
3. Press the home key to return to the measurement window.
4. To start the measurement, press the [Trig.] key at the front panel (Remote com-
mand: *TRG on page 185).
The key lights up. The R&S LCX performs one measurement cycle. When comple-
ted, the key turns off and the R&S LCX waits for the next trigger signal.
Measurement mode
Instrument functions
R&S
®
LCX Series
72User Manual 1179.2260.02 ─ 08
Note: The trigger icon also turns white during the measurement cycle. If you
have set a delay time, the trigger icon turns yellow until the delay time is elapsed.
5. Optionally, configure the next working point.
6. Repeat the steps until you have executed the measurement at all working points.
8.2 Display mode
The R&S LCX indicates the measurement results numerically and graphically.
Based on the measured values, the instrument calculates and derives the non-measur-
able parameters for display.
8.2.1 Display mode settings
Access:
1. To select the measurement result display, press the [home] key at the front panel.
The numeric display shows the readings of four-measurement pairs by default.
Figure 8-1: Four measurement pairs display
2. Press the [Display Mode] key.
3. Pressing the key repeatedly, toggles between this view, the view with one mea-
surement pair and the graphical view.
Note: You can also access the graphical display in the "Functions" tab, see Sec-
tion 8.8, "Specific instrument functions", on page 93.
The results display shows the measurement results of the currently selected
parameters. The softkeys enable you to select the parameters for display accord-
ing to your measurement.
The required remote commands are described in: Section 11.11, "FUNCtion sub-
system", on page 209
How to: see Section 8.2.2, "Configuring the main view", on page 73.
<measurement pair>.....................................................................................................73
<measurement accuracy>.............................................................................................73
Display mode
Instrument functions
R&S
®
LCX Series
73User Manual 1179.2260.02 ─ 08
<measurement pair>
Selects the measurement parameter pairs.
Depending on the type of component sample, the R&S LCX adjusts the list of parame-
ters automatically.
Remote command:
FUNCtion:IMPedance[:TYPE][:PRIMary] on page 212
FUNCtion:IMPedance:TYPE:SECondary on page 213
<measurement accuracy>
The test signal monitor indicates the accuracy of the recent measurement.
Remote command:
FETCh:ACCuracy? on page 206
8.2.2 Configuring the main view
Selecting the parameters
To select the measurement parameters:
1. At the front panel, press the [home] key.
2. Select the parameter pair softkey in the upper left corner of the screen, to open the
selection editor.
3. Select the corresponding measurement pair.
4. Confirm the selection.
5. Select the second measurement pair accordingly.
The R&S LCX displays the selected parameter pairs in the numeric view.
8.3 Measurement functions
The hardkeys provided in the function panel at the front select the measurement com-
ponent type.
Functions [hardkeys].....................................................................................................73
Functions [hardkeys]
Selects the type of component sample to be measured.
Remote command:
FUNCtion:MEASurement:TYPE on page 214
Measurement functions