User`s manual

Note: Due to low power consumption of 844A in inactive state,
it doesn't require power switch. When the power LED indicator
glows with a low intensity the 844A is in inactive mode.
Connecting 844A to PC
Switch off the PC and programmer. Insert the connection
cable, included in the 844A programmer delivery, to the free
printer port of PC. If your computer is equipped with only one
printer port, substitute the programmer cable for the printer
cable. Connect the opposite cable end to the programmer.
Screw on both connectors to counter connectors. This is very
important mainly for the connector to programmer. Though
replacing the printer cable by the programmer cable is
uncomfortable, it is not recommended to operate the 844A
programmer through a mechanical printer switch. Use of an
electronic printer switch isn't possible.
Connect the mains connector of the power supply (or wall-plug
power supply self) to a mains plug, connect the connector to
the programmer's connector labeled 15VDC. At this time all
'work result' LEDs (and 'POWER' LED) light up successive and
then switch off. Once the POWER LED lights with low
brightness then the 844A is ready to run.
Next switch on the PC and run the control program.
Caution! If you don't want to switch off your PC when
connecting the 844A, proceed as follows:
• When connecting the programmer to the PC: FIRST insert
the communications cable and THEN the power-supply
connector.
• When disconnecting the programmer from the PC: FIRST
disconnect the power-supply connector and THEN the
communication cable.
Problems related to the 844A  PC
interconnection, and their removing
If you have any problems with 844A  PC interconnection,
see section Common notes please.
Manipulation with the programmed
device
After selection of desired device for your work, you can insert
into the open ZIF socket (the lever is up) and close socket (the
lever is down). The correct orientation of the programmed
device in ZIF socket is shown on the picture near ZIF socket
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