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Thermal Jet
Appendix B: Theory of Operation
Thermal Jet Operations Manual Rev M
Page 34
Handheld Controller
Functional Description
The Handheld and Thermal Jet System prints text, autocodes (such as product counts or
time and date stamps), bar codes, and/or graphics onto products as they travel by con-
veyor past stationary print heads. Print can be on any one of, or a combination of, the prod-
uct's sides. Print speed is controller by a conveyor mounted encoder or a built-in fixed
speed encoder. Products are detected using a photosensor. A graphical user interface with
color LDC, touch screen, and 70-key QWERTY keypad provides for easy and intuitive sys-
tem operation.
Power
The Handheld Controller draws its power through either one of its serial port connectors,
either from the print head directly attached to the port, or in applications where the optional
accessory hub or Bulk Ink System is used, from the hub or ink system. Alternately, with no
print heads attached, the Controller may be powered by an optional 15VDC desktop power
supply plugged into its power jack.
Battery Backup
- A 3V battery on the CPU Board maintains the contents of system SRAM
and keeps the real time clock running during power outages or when the Handheld control-
ler is not plugged into a power source.
Please note that power is applied to the Handheld even when it is "turned off." When
turned off using the OFF button on the keyboard, the controller enters a sleep mode where
it responds to nothing but the ON button. All voltages are present while sleeping. The only
way to completely remove power is to unplug the unit.
Handheld Controller Power & Cabling Diagrams
Single Task:
The Handheld controller
draws its power from the print head, and
the COM1 port is connected to the output
connector of the last head in the daisy
chain.
HH Controller Cable
P/N 5780-616-06
DB9 F-F
Print Head Cable
P/N 5780-319-06
DB9 M-F
Handheld Controller