Function and Features 
  Copyright © Itech Electronics Co., Ltd.  20 
apparent power,peak current,output time 
 
 
 
 
Notes: 
The time shown on the VFD is the output time of AC source. Press    to 
start the timing when power is on; press    again to turn off power. The 
duration of power supply  will be displayed on the VFD until the next power 
starts when the timer will reset. The timing is based on the decimal system: 
when the time reaches 999.9 s, the timing will be displayed in minutes (m); 
when the time reaches 999.9 m, the timing will be displayed in hours (h). 
3.7 Save and recall operation 
IT7300 series AC source provides10 non-volatile registers to save instrument 
settings for  recall later.Each operating state includes preset voltage, preset 
frequency, starting and stop phase angle, output range level and dimmer phase 
angle. 
Press(Shift) +    (Save) key to recall /save settings. 
Save operation: 
To save the instrument’s settings  to a register,press shift  +   
(Save).You’ll be prompted for a register number.Enter a number between 0 and 
9,then press the Enter key.The setting are saved. 
 
 
 
 
 
Recall operation: 
press  button.You’ll be prompted for a register number.Enter a number 
between 0 and 9,then press the Enter key.The setting are recalled. 
 
 
 
 
3.8 Trigger operation 
IT7300 power supply can be triggered by means of manual trigger (MENU), 
command trigger (BUS) and external trigger (EXTERN). Manual trigger means 
to trigger by keys;  command trigger means to trigger through the 
communication command when PC is used for control; and external trigger 
means to trigger by the BNC terminal at rear panel. 
To trigger operation by the panel, you need to set the trigger operation mode 
(TRIG) in the system menu to MENU. For details, see Section 3.9 Menu 
Operation. 
During surge/trapped wave test under List operation, press    (Shift) + 
  (Trigger) to trigger surge/trapped wave. When LIST file is running, the 
trigger function key    (Trigger) will flick.