Vectronics VEC-202 - Manual (Page 2)

VEC-202 Instruction Manual Mini Keyer with Memory
2
the front 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.
8. The
Direct/Grid-Block Output keying circuit allows keying of grid-block
and solid state transmitters. The VEC-202 can only key one type of
transmitter at a time. This is an internal jumper selected option. The unit is
factory set to direct keying. To change to grid-block keying the power must
be off, then remove the cover by removing the two screws (one on each
side) that secure it. Locate JMP1 and JMP2. JMP2 is directly behind the
RCA jack. JMP1 is approximately ½" below and slightly to the left of
JMP2. Set both jumpers (JMP1 & JMP2) to the "G" position. To key a
solid state transmitter, set both jumpers to the "D" position.
Note: Power must be off when changing the jumper settings.
9. The Iambic Type A/B mode is set inside the unit. The unit is factory set for
Type "A" Iambic. If you prefer Type "B" Iambic, remove the cover by
removing the two screws (one on each side) that secure it. Locate jumper
JMP3 (behind the volume control near the power switch) and set it to the
"B" position. For Type "A" Iambic, set the jumper to the "A" position.
When a squeeze is released during an element (dot or dash), type "B" adds
the opposite element. Type "A" just finishes the element in progress and
does not produce a following alternate element. For example, in Type "A"
Iambic, a squeeze release during the "dah" in the letter A will produce "dit
dah" (A). In Type "B" Iambic, a squeeze release during the "dah" in the
letter A will produce "dit dah dit" (R).
INSTALLATION
1. A 9-volt battery (not included) may be installed. Remove the cover by
removing the two screws (one on each side) that secure it.. A battery clip
and a holder, located on the right side of the enclosure, are provided for
installing a 9-volt battery.
2. A 12 Vdc power supply may also be used to power the VEC-202. A 2.1mm
coaxial plug with a positive center and a negative sleeve should be used to
power this unit. The battery is automatically disconnected when external
power is used.