System-Related Functions
To clear the UUT OTP and return to normal operation, firstly remove the
conditions that caused the protection fault. Press [Esc] key (or send the
command PROTection:CLEar) to clear the protection status. The “UUT Over
Temperature” displayed in front panel is cleared and the instrument exits OCP
status.
7.7 External analog function (optional)
When the interface card selected by the user is DB25 analog interface (IT-
E1208), the analog interface can realize the external analog function.
The rear panel of this series is optionally configured with a DB25 analog inter-
face, through which, the following functions can be realized:
• Remotely control voltage and current values
• Control On/Off state
• Remotely monitor CC and CV states as well as voltage and current values
• Clear instrument faults
• Monitor the instrument loading state, On/Off state and fault state
• RS-485 interface connection. For detailed introduction about interface, refer
to 2.6.5 RS-485 Interface
• Before connecting the hardware equipment that controls the analog in-
terface, ensure that the hardware equipment would not output voltage
that is 20% higher than specified value. Otherwise, it would damage the
instrument. For example, during setting of voltage or current, the input
voltage cannot exceed 12V. Otherwise, it would damage the instrument.
• Under the analog remote control mode, the analog signal input pin can-
not be suspended, before enabling the external analog function on the
front panel, it is necessary to correctly connect the 1 (Vol_Pro), 15 (Cur_
Pro) and 17 (Cur/Vol_Pro).
• There is safe electrical isolation between the analog interface and the
DC terminal. Do not connect any ground wire of the analog interface to
the DC+ or DC- terminal on the instrument’s rear panel.
The analog signal bandwidth is less than 100Hz, and the signal bandwidth sup-
ports any waveform. When the programmed signal frequency or amplitude ex-
ceeds the output capacity, the instrument will automatically limit the output
amplitude. When the input voltage exceeds 10V, the set value will be limited in
the maximum rated value range.
Copyright © Itech Electronic Co., Ltd.
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