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AUTO, R L, C, % LEDs that indicate the measurement type for the main parameter
Q, D, R, % LEDs that indicate the measurement type for the secondary
parameter
, k, M LEDs indicating the units of the value being displayed on the left
µH, mH, H
pF, nF, F
k The right-side display is dimensionless or has units of ohms
unless this LED is on.
REM, ACT, ERR These LEDs give information on the status of the remote control
(computer) interface operations.
REM: Indicates that the display is being controlled remotely via the interface
connector on the rear panel.
ACT: Indicates that the remote control interface is active.
ERR: Indicates that a remote command contained an error.
NOM, LIM, LIM Indicates which Binning
parameter is being entered
Programming and Operator Interface Keys
On the right side of the front panel of the LCR meter, there are many buttons and keys for
programming test conditions and for general operator interface. These keys are grouped
according to function, and some groups have LED indicators associated with them show
which option has been selected.
Frequency The 9216A has five selectable fixed frequencies with an accuracy to
100ppm (0.01%). 100Hz, 120Hz, 1kHz, 10kHz or 100 kHz may be selected by
pressing the up/down keys on the front panel keypad until its corresponding LED is
illuminated.
Drive Voltage
VOLT Pressing the VOLT key, the output voltage will cycle through three
fixed output drive voltages (0.1V, 0.25V, 1.0V). An LED indicates the selected
drive voltage. If NO LED is lit, then the output drive voltage is in the vernier
mode.
CONS This key sets the meter to the constant voltage mode.
BIAS The bias mode is used only for capacitance measurements. Pressing
these keys for any other measurement will generate the “bias for c” error message.
INT Selects a 2.0 VDC internal bias.
EXT Selects a voltage from an external source to be applied to the
capacitor under test.
Binning is explained later.
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