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Model 3550 LCR Meter Instruction Manual Operating Instructions
Front Panel Description cont’d:
[SHIFT] ĺ [7]: Comparator Functions Mode
Press [SHIFT] ĺ [7] to access the Comparator Functions Mode. Either a flashing “0” or a “1”
will appear on DISPLAY B. The meaning of the numbers is as follows:
0: Absolute Value Comparator Function
1: Percent Comparator Function
To change the flashing digit, press either [0] or [1] and press [ENTER] to store the new
setting and return to the measurement mode.
[SHIFT] ĺ [8]: Defining Spot-Correction Frequencies for Zero Adjustments
The spot-correction frequency mode allows the user to identify up to three specific test
frequencies where open and short-circuit, zero adjustments may be performed. This
feature condenses the default zero adjustment procedure by limiting the zero adjustments
to user-defined frequency points instead of stepping through the entire range of test
frequencies (42Hz~5MHz). Performing spot-correction frequency zero adjustment saves
time by eliminating the zero adjustment of unused test frequencies.
Select the Spot Frequency Number
Press [SHIFT] ĺ [8] to enter the spot-correction frequency editing mode. The BIN LED will
display a flashing “1”, “2”, or “3”. Press either the [1], [2], or [3] keys to select the spot
frequency you would like to set.
Entering the Spot Frequency Value
Once a key is pressed, DISPLAY C will display “---“ indicating that a spot frequency must be
defined. Press the [0]~[9] keys to enter the spot frequency digits. Next, press the [DP] key
to position the decimal point. Press either of the [CURSOR Ź] or [CURSOR Ż] keys to
highlight the frequency units. Press the [UNIT] key until the desired frequency units
annunciator starts to blink. Press the [ENTER] key to finalize the spot frequency setting.
To disable the Spot Correction Frequency, make sure that you are in the spot frequency
editing mode (press [SHIFT] ĺ [8]) use the [CURSOR] keys to highlight DISPLAY C. When
this is done, press the [IGNORE] key to erase the current spot frequency setting.
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