Controls - AEA COMPUTER PATCH CP-1 Instruction Manual

FRONT PANEL
Power. O n/off switch. With the switch depressed, the CP-1 w ill be
on and the LED power indicator w ill light.
Filter. VAR/170/CW — Selects CW or RTTY operation. Use the
VAR (variable) shift rotary control when in the VAR position for RTTY
shifts at other than 170 Hz. The variable shift control covers frequency
shifts between 100 Hz and 1000 Hz. It is used fo rtu n in g non-amateur
RTTY signals. Normally, when using your CP-1 in the amateur bands,
use the 170 position. CW selects a 800Hz center frequency filter.
Normal/Reverse.
space are selected. In reverse, 2295 mark and 2125 space Hz tones are
selected. This feature only affects receive. If you select reverse, your
transm itted tones w ill still be 2125 Hz mark and 2295 Hz space. The
reverse mode is useful for copying stations that are inadvertently
transm itting inverted.
Tune. Magic eye style bar graph indicator fo r CW and RTTY signal
tuning.
VAR Shift. Adjusts RTTY shift of upperfrequencytonefrom 100 Hz
to 1000 Hz. This control is only effective when the VAR filter is selected.
STBY/PTT, Manual TX.
activate the PTT line of your transceiver, (provided you have hooked
up a cable between the mic output of the CP-1 and the mic input of
your transceiver). When the switch is in the 'in' position, your
transceiver w ill be in a transm it state.
REAR PANEL
Threshold — Squelch Adjustment.
CP-1 operation. This control only affects RTTY reception. It can be
used as an anti-space circu it (so you only get print when you are
receiving a RTTY signal). To set the level, tune to a dead air spot on the
band and turn the control full clockwise viewing the unit from the back.
With the RTTY filte r selected on the CP-1, slow ly start turning the
'threshold' control counter-clockwise. When garbled copy starts
appearing on the screen, turn the control a bit clockwise.
Note: Your volume control should be set at an easy listening point.
If you have it set too high or have too much line noise, you may not be
able to com pletely
conditions.
AFSK Level.
between 0 and 200 mv pp. For transceivers with pre-amplified
microphones (such as ICOM), set the control at maximum signal out.
The level is preset to 30 mv pp. If more output is required, reduce R116
value, but no lower than 560 ohms.

CONTROLS

I n the normal position 2125 Hz mark and 2295 Hz
This control w ill allow you to manually
eliminate
Sets the AFSK output level. The level is variable
Sets minimum signal level for
garbage copy under no-signal