Tegam 3550 - Test Voltage Set Mode

4-11
Model 3550 LCR Meter Instruction Manual Operating Instructions
Front Panel Description cont’d:
[SHIFT] ĺ [1]: Test Voltage Set Mode
*See the Appendix for detailed information concerning the measurement ranges for constant current or constant
voltage modes and for instructions for setting either of these modes.
The 3550 test voltage values may be modified if the open circuit voltage or constant
voltage setting is displayed on DISPLAY C. Constant voltage mode is indicated when the
[CV/CC] and [V] pushbuttons are illuminated. The 3550 is in open circuit voltage mode
when only the [V] key is lit.
The Model 3550 has programmable test voltages from 0.01V~5.00V for test frequencies of
42.0Hz~1.00MHz. For test frequencies above 1.00MHz, the voltage can be adjusted
between 0.01V and 1.00V. Test voltages are adjustable in steps of 0.01V and are displayed
in DISPLAY C to three significant digits. Refer to the Appendix to calculate the maximum
voltage range of the constant voltage mode.
If DISPLAY C is set to indicate test voltage and the 3550 is in the Measurement mode, the
voltage amplitude can be incremented or decremented by pressing the [UP] and [DOWN]
keys in the DISPLAY C panel. If the [UP] and [DOWN] keys are held down the 3550 will
increase the speed at which the voltage is incremented or decremented.
If more dramatic changes are required, then the test voltage must be manually entered by
accessing the 3550’s voltage set mode.
Pressing [SHIFT] ĺ [1] will cause the 3550 to enter the voltage set mode. Below are
instructions to set the test voltage.
Enter the Voltage Values
The most significant digit in DISPLAY C will flash indicating that a new value must be
entered. Press a key from [0]~[9] to set the value of the first digit and to proceed to set
the next digit value. Once again, press a key from [0]~[9] and proceed to the next digit.
Verify and Set the Test Voltage
Once all three digits have been entered, double-check the final voltage value. The values
are changed by pressing the [CURSOR Ź] or [CURSOR Ż] keys and entering a new value.
Press the [ENTER] key to save the voltage setting and to return back to the measurement
mode.
If a programmed voltage exceeds the instrument’s sourcing capability, the 3550 will beep
three times and not allow the illegal value to be saved if the [ENTER] key is pressed.
[SHIFT] ĺ [2]: Test Current Set Mode
*See the Appendix for detailed information concerning the measurement ranges for constant current or constant
voltage modes and for instructions for setting either of these modes.
The 3550 test current values may be modified if the open circuit current or constant
current setting is displayed on DISPLAY C. Constant current mode is indicated when the
[CV/CC] and [I] pushbuttons are illuminated. The 3550 is in open circuit current mode
when only the [I] key is lit.
Programmable test currents are available from 0.01mA~99.99mA for test frequencies of
42.0Hz~1.00MHz. For test frequencies above 1.00MHz, the current can be adjusted
between 0.01mA and 20.00mA. The 3550’s test current is adjustable in 0.01mA steps and
is displayed to three significant digits. Refer to the Appendix for instructions to calculate
the maximum test current available in the constant current mode for a given impedance.