Chart Output (Analog Output)
You can use the Chart Output (Analog Output) connector on the rear
panel to run a strip chart recorder or similar instrument. The connector
provides an output voltage proportional to the measured voltage.
• The output can range from –3.00 V to +3.00 V.
• When chart output is disabled (Off), the output is set to 0 V.
• The output impedance is 1 kΩ.
• The output voltage is related to the input signal as follows:
(reading − chart null)
span
= chart output voltage
Note that reading includes the results of measurement unit
conversion, filtering, null, and any math operation performed on the
measurement.
• The chart output state (including the span and null values) is stored
in non-volatile memory.
• span cannot have a negative value.
• The chart output has a voltage "rollover" to prevent the loss of data,
see page 100.
Examples:
See page 38 for a menu procedure to enter a number.
1) To set the chart span so that a ±1 mV input signal produces a ±1.0
Volt chart output:
(0.001 − 0.0)
span
= 1.00
span =
0.001
1.00
= 0.001
When chart null is set to 0, the value
1
span
can be considered the gain and
chart output = gain ∗ reading.
Chapter 3 Features and Functions
Chart Output (Analog Output)
98
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