Model SR715 Model SR720 LCR Meters

OPERATIONBinning data can be entered manually using the [Bin#], [Nominal] and [Limit] keys, or over the RS232 oroptional GPIB interface. A bin is defined by a bin number, with a nominal value and upper and lower limits (inpercent). If a nominal value is not entered for a bin, it will take the nominal value of the next lower bin. Bin 0 isthe exception. If bin 0 doesn't have a nominal value and limits, all parts will fail. Parts that fall into more thanone bin are assigned to the lower numbered bin. Thus, the tightest tolerances should be assigned to thelowest bin number. Any parts that fall into gaps between bins are assigned to the general failure bin (bin 9). Ifonly one limit of a pair is entered, the limits will be assumed to be a symmetric pair (+/- x %, where 'x' is theentered limit value). Unused bins should be closed (assigned 0% limits). After bin clear or [Recall] [0], all binsare closed. Parts that fall into both the general fail bin (bin 9) and the QDR fail bin (bin 8) are assigned to theQDR fail bin. The QDR limits are maximums or minimums depending on which parameter is being measured.If a Q value is negative, (for resistors) the absolute value should be entered, and the meter performs acomparison between the absolute value of the QDR reading and the QDR limit. There are no limits for theQDR bin, only a nominal value. To disable the QDR comparison, set the nominal value to its extreme value.Parameter being measured QDR Limit Extreme Value (disabled)R+Q Q maximum 9999.9L+Q Q minimum 0C+D D maximum 9999.9C+R series R maximum 9999.9C+R parallel R minimum 0SETTING UP THE BINSINITIALNOMINAL VALUESFOR PASS BINS (0-7)LIMITS FORPASS BINS (0-7)To enter binning information the unit can not be in the AUTO parameter mode.Make certain that the unit is set to the correct parameter (R+Q, L+Q, C+D orC+R). Press the [Bin#] key which will bring up the bin entry display and put theunit in the entry mode. If any previous binning information needs to be cleared,press the [Bin#] key until the 'bin cLEAr' message appears. Press the [ENTER]key to clear all bin data and display 'cLEAr donE'. To enter new bin data or to editold bin data (if it wasn't previously cleared), press the [Bin#] key until the unitdisplays 'bin x'. Enter the desired bin number ([0] thru [8] then [ENTER]). The binnumber will appear on the right display. This is the bin for which subsequentnominal and limit values will be entered.To enter the nominal value, press the [Nominal] key. The display will show thepresent nominal value, or '-----' if the bin was previously closed in the left display.The 'NOM' LED below the display will be on. If a nominal value is needed for thisbin, enter the desired nominal value with the numeric keys and the unit entrykeys. The new nominal value, including units will be displayed. Note that anominal value doesn't have to be entered for each bin. If a bin doesn't have anominal value it will use the one from the bin below it.To enter the limits, press the [Limit] key. The display will show the present upperlimit value, or '---' if no limit existed previously. The +LIM LED below the displaywill be on. Enter the limit value in percent using the numeric keys and the[ENTER] key. If it is necessary to enter a non-symmetrical limit pair, press the[Limit] key a second time to display the present lower limit value. The -LIM LEDwill turn on. Enter the lower limit in the same fashion as the upper one. Forsymmetric limits, enter only the upper value; the lower limit will be the negative ofthe upper limit. If no limits are entered for a bin, that bin will remain closed, even ifit has a nominal value.2-19