Vectronics VEC-221K - Manual (Page 20)

VEC-221K Instruction Manual CW Memory Keyer Kit
15
Actuate push-button switches SW1 to SW6 a few times and note the latching
action. The switches will toggle from off to on; the on condition exists when the
shaft remains partially recessed; off when the shaft is fully extended.
! Set Power switch SW5 to off.
! Attach the paddle plug to jack J1 (Key Input) on the PC board.
! Attach a monitor speaker or headphones to jack J3 (Audio Out.)
! Connect a fresh 9-volt battery to the battery clip.
! Perform the self-test described below.
Self Test
A self-test routine is used to check the functions of the unit. This routine checks
the paddles, the push-button switches, the knob, the non-volatile memory and the
audio circuitry. During the self-test, you may stop the test by turning off the
unit; however, this should NOT be done during the memory test or the memory
could be corrupted. This self-test can be completed in approximately one
minute.
Note: Performing the self-test will reset the unit to its factory default settings.
Here is the self-test procedure:
1. Turn off the unit.
2. Turn the Speed control R6 to full clockwise position.
3. Set the Volume control R8 to a comfortable listening level (midrange).
4. Squeeze the paddle while turning the power on by pressing the Power switch
SW5. The test begins by sending a copyright message "(c) 199X
VECTRONICS VX.XX" . This is the test of the audio circuitry. Release the
paddles before this message completes.
5. The LED should be off after the copyright message is finished. For the
entire test, the LED should blink once after each operation. If the LED
blinks continuously, the unit fails the test and a Morse code message is sent
to indicate the nature of the failure.
6. Press and release the dot level (connected to the tip of the plug).
7. Press and release the dash level (connected to the ring of the plug).
8. Press and release the Message 1 switch SW1.
9. Press and release the Message 2 switch SW2.
10. Press and release the Message 3 switch SW3.