GETTING STARTED
1-3
KEYPAD
The keypad is used to select measurement
conditions and to enter values. LEDs indicate the
actual
measurement conditions.
PARAMETER
The [R+Q], [L+Q], [C+D], [C+R], and [AUTO] keys
select the parameter being measured. The
selected parameter pair is indicated above the
major and minor parameters in the display. If
AUTO is selected, the unit will select the most
appropriate parameter pair and turn on the AUTO
LED above the major parameter display.
FREQUENCY
The [UP Arrow] and [DOWN Arrow] keys select
one of the following output frequencies: 100 Hz,
120 Hz, 1 kHz, 10 kHz or 100 kHz (SR720 only).
The LEDs indicate the selected frequency.
DRIVE VOLT
The [Select] key cycles through the three output
drive voltages, 0.1
V, 0.25
V and 1.0
V. The
selected voltage is indicated by the LEDs. If no
LED is on then the output drive voltage is in the
vernier mode.
The [Cons Volt] key places the unit in the constant
voltage mode.
BIAS
[Internal] selects a 2.0 VDC internal bias. [External]
selects an external bias source. Pressing the
active key ([Internal] when internal bias is already
selected or [External] when external is selected)
turns the bias off.
Note that the bias is used only for capacitance
measurements. Pressing either of these keys in
any other mode, including the auto mode, will
display the error "bias for C".
MEAS RATE
The [Rate] key selects a slow, medium or fast
measurement. These rates correspond to 2, 10, or
20 measurements per second at measurement
frequencies of 1 kHz or higher.
AVERAGE
The [Average] key places the unit in the averaging
mode. Pressing it a second time returns the unit to
the non-averaged mode. The number of readings
averaged is set to between 2 and 10 from the entry
display.
RANGE HOLD
[Range Hold] holds the unit in its current
measurement range. Pressing the key a second
time returns the unit to autoranging or normal
Содержание SR715
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