Honeywell 1900GHD-2 User Guide - Page 146

All Symbologies If you want to decode all the symbologies allowable for your scanner, scan the All Symbologies On code. If on the other hand, you want to decode only a particular symbology, scan All Symbologies Off followed by the On symbol for that particular symbology. All Symbologies On All Symbologies Off Note: When All Symbologies On is scanned, 2D Postal Codes are not enabled. 2D Postal Codes must be enabled separately. Message Length Description You are able to set the valid reading length of some of the bar code symbologies. If the data length of the scanned bar code doesn't match the valid reading length, the scanner will issue an error tone. You may wish to set the same value for minimum and maximum length to force the scanner to read fixed length bar code data. This helps reduce the chances of a misread. EXAMPLE: Decode only those bar codes with a count of 9-20 characters. Min. length = 09Max. length = 20 EXAMPLE: Decode only those bar codes with a count of 15 characters. Min. length = 15Max. length = 15 For a value other than the minimum and maximum message length defaults, scan the bar codes included in the explanation of the symbology, then scan the digit value of the message length and Save bar codes on the Programming Chart inside the back cover of this manual. The minimum and maximum lengths and the defaults are included with the respective symbologies. 7 - 2