Programmable AC Source 6430/6420/6415 User‘s Manual
Action 7-segment LED Display
1. Enter into shift mode by pressing SHIFT key, and 250.0 70.0 0.00
“SHIFT” LED will be on.
2. Press F4 , and release it immediately. The contents of 40.5 60.0 0.00
previously stored set values will be shown on the LED.
3. If these are not the desired set values, repeat step 2 to step 55.0 60.0 0.00
3 for other memory channels until the right ones are gained.
4. Press ENTER to confirm. 135.5 82.0 0.00
3.5 Data Lock
After the completion of setting values for outputs, the user can lock the keypad on the front panel
so as to avoid incidental change. To lock the setting of output data, the user needs to press
SHIFT , and the “SHIFT” LED will be on. Then, he can press LOCK , the same one as the 0
key, to turn on the “LOCK” LED. To unlock, he needs to press LOCK , the same one as the 0
key, to turn off the “LOCK” LED.
3.6 Ext Prog
The 6430/6420/6415 AC sources allow the user to use an external DC voltage level as a linear
control reference for output Vrms. The relationship of Vout and Vref is listed as follows:
Vout = Vref ÷ 10V x Vfs
Vout : The Vrms output of the 6430/6420/6415.
Vref : DC level of the external control voltage.
Vfs : The current setting of full scale (full range) of output Vrms.
Note: The external DC voltage must not exceed 10.5 Volts. Because the cap of APG terminal is
connected to earth ground, so floating or hazardous voltage on the cap may cause damage.
When the “EXT PROG” is active, the user cannot program the value of Vout, but he can do that
of output F. To use this function, he must connect the external device of controlled DC to the
“APG” port on the rear panel of any of the 6430/6420/6415 as illustrated in 2.6.
3-8
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