IQ plus® 800/810 - Rice Lake Weighing Systems

eappears on the display. Repeat to verify thatthe results are similar. Record this value asW SPAN for channel 1 in Table 4-1. This is acalibration number, not a weight value.Remove the test weight.6. Press DISP TARE to return to the channelselection level of the calibration menu. Repeatthe above steps for additional scale channels,if necessary, or press DISP TARE a secondtime to exit calibration and return to thefirst-level menus.7. Press DISP TARE to lock in calibrationsettings.8. Slide the setup switch on the CPU board backto the previous position to exit setup mode.WEIGHT Calibration W ZERO W VAL W SPANCHANNEL 1CHANNEL 2CHANNEL 3CHANNEL 4Table 4-1. Weight Calibration Values. Use this table to record weight calibration values for your indicator. All weightcalibration values should be recorded for future reference. These values allow you to swap indicators in the field withoutusing test weights to recalibrate the replacement indicator.Voltage Calibration (for Units Manufactured Prior to July 1996)IQ plus 800/810 CPU boards manufactured prior toJuly, 1996 had separate A/D converters bolted tostandoffs on their CPU boards. These replaceable A/Dconverters were matched to their CPU boards by a setof voltage calibration numbers. These voltagecalibration values appeared under a separate VOLTSsubmenu in the CALIBRT menu.When replacing an A/D converter on one of theseolder units, it is necessary to go into the VOLTSsubmenu and replace the existing voltage calibrationnumbers with the new ones found on the replacementconverter. This step will match the new A/D converterto the existing board.Current CPU boards are built with integral,non-replaceable A/D converters. With these models,there is no need to enter the VOLTS submenu duringcalibration except as noted at left.NOTE: Do not change any VOLTS calibration valueswhile calibrating the indicator. Do not press ENTER whileviewing values.VOLTAGE Calibration V ZERO V VAL V SPANCHANNEL 1CHANNEL 2CHANNEL 3CHANNEL 4Table 4-2. Voltage Calibration Values. Use this table to record voltage calibration values for indicators manufactured prior toJuly 1996. These values allow you to swap indicators in the field without using test weights to recalibrate the replacementindicator.Calibration 39