Vectronics CK-200 User Manual

Page 2

CK-200 Instruction Manual

Electronic CW Keyer

remove the cover by removing the two screws (one on each side) that secure
it. Locate jumper JMP1 behind the microprocessor and set it to the "H"
position.

5. The

Keying rotary switch selects output for negative (grid-block), positive

(direct), or relay contact output.

6. The

Weight control varies the code weight from approximately 25% to

75%, with the standard dot defined as 50% weight. The standard dot-dash-
space ratio is 1:3:1 (trimpot at mid-range). The unit is factory set to
standard weight of 50%. To change the code weight, remove the cover by
removing the two screws (one on each side) that secure it. Locate trimpot
R27 next to jumper JMP1; turn it clockwise to increase dot and dash lengths
and counter-clockwise to decrease dot and dash lengths.

Figure 2. CK-200 Right Side.

7. The

Volume control adjusts the sidetone level of the internal speaker. This

control is located internally. When looking at the unit's front panel, it is
accessible through a small hole on the right side, closest to the front and
may be adjusted by inserting a small flat-headed screwdriver. This control
is turned clockwise to increase the volume and counter-clockwise to
decrease the volume.

8. The

Pitch control sets the desired sidetone pitch from approximately 300 to

1200 Hz. This control is also located internally. When looking at the unit's
front panel, it is accessible through a small hole on the right side, closest to
the rear and may be adjusted by inserting a small flat-headed screwdriver.
This control is turned clockwise to raise the pitch and counter-clockwise to
lower the pitch.

VOLUME CONTROL

PITCH CONTROL

COVER SCREW (2)

REAR

FRONT