Decoding Preferences 5 - 5
DPM Scanning
Unlike bar codes that ar e typically printed on la bels, a direct par t mark (DPM) is a symbol that is marked directly on
an item’s surface for permanent identification. These symbols are mark ed using methods such as laser etching
and dot peening (see Figu re 2-4 on p age 2- 6 for an example of a dot pe en symbol). The DS3478-DP ( DPM) digit al
reader scans these types of symbols.
To program the DS3478-DP digital scanner for DPM reading:
1. The DS3478-DP digital scanner ca n no t r ead ce rtain bar cod es in ne ar field. To ensur e the di gital scanner can
read all bar codes, scan Far Focus on page 5-3.
2. If you disabled DPM scanning in the DS3478-DP digital scanner, scan Enable DPM Scanning.
3. Before scanning a DPM bar code, ensure that Dat a Matrix on page 13-65 is enabled.
NOTE When the DS3478-DP digital scanner is DPM enabled, the digital scanner reads all symbols including
DPM, 1D, PDF417, etc. If you don’t need DPM reading, scan Disable DPM Scanning to ensure optimum
scanner performance.
If you enable DPM Scanning, disable Picklist Mode on page 4-7 when scanning a DPM bar code.
Picklist performance is not guaranteed for DPM bar codes.
Also, if you enable DPM Scanning, the scanner behaves as if you enabled the Data Matrix Inverse
Autodetect setting. When you disable DPM Scanning, th e previous (user-selected) Data Matrix Inverse
setting remains in effect. See Data Matrix Inverse on page 13-65.
*Enable DPM Scanning
Disable DPM Scanning