ITech IT-M3900C Series User Manual page 174

2. Calculate the Mx and Mb under the Ch1, Ch2, Ch3 menus according to the
above formulas. The sample data used in this manual is shown in the table
below.
Pins Input
Voltage
8 V = -5
in1
V = 5
in2
9 V = -10
in1
V = 10
in2
10 V = -10
in1
V = 10
in2
3. Set MX and MB of the corresponding pins.
a. Press the composite keys [Shift]+[P-set] (System) on the front panel to
enter the system menu.
b. Use knob key to select Ext-Program and press [Enter].
c. Set the Ext-Program→On / Off to On to turn on the analog function.
Copyright © Itech Electronic Co., Ltd.
Mx
Output Volt-
age / Current
V = 0 50
out1
V = 500
out2
I+ = 0 1.5
out1
I+ = 30
out2
I- = -30 1.5
out1
I- = 0
out2
Basic Operation
Mb Description
250 By inputting a volt-
age of -5V to 5V to
pin 8, the actual out-
put voltage Vs is
controlled from 0 to
500V.
15 By inputting a volt-
age of -10V to 10V
to pin 9, the actual
output current upper
limit I+ is controlled
from 0 to 30A.
-15 By inputting a volt-
age of -10V to 10V
to pin 10, the actual
output current lower
limit I- is controlled
from -30 to 0A.
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