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10. HOLD FUNCTION
The AD-4531B has four hold modes: sample hold, peak hold, bottom hold and bipolar
peak hold. Select a hold mode in the function mode (
f0-04
).
In all hold modes, the hold data is saved digitally, so there is no drooping of the value
displayed on the display panel or the analog output. Note that the hold function is
disabled when the AD-4531B is disconnected from the power supply.
10.1. Basic function
Start the hold function by using the
key, the hold terminal of the external input, or
a serial communication command.
10.1.1. Operation by using the
key
Press the
key. The hold function starts and the AD-4531B holds the displayed
value.
While the display is in the hold mode, pressing the
key again cancels the hold
function and the AD-4531B displays the measured value.
10.1.2. Operation using the external input hold terminal
When the external hold input terminal is turned on (contact input), the hold function
starts.
To hold the displayed value at this time, keep the external input hold terminal in the on
state.
To cancel the hold function, set the external input hold terminal to the off state.
10.1.3. Operation using a serial communication command
The hold function is started by the hold ON command “H
CRLF
” of the serial
communication and is canceled by the hold OFF command “C
CRLF
”.
10.2. Hold indicator
The AD-4531B indicates that it is in the hold state by turning the
HOLD
LED on.
10.3. Priority of hold input
To start the hold function, setting the external input hold terminal has a higher priority
than other operations.
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