Crystal Instruments Coco-80 - System Reset Methods; Keypad Locking Mechanism

CoCo-80 Quick Reference
73
Issue
Possible Cause
Solution
A data
recording has
not been
started.
Press Rec/Stop to begin data
collection, then use the Push to
Talk button on the microphone to
create an annotation associated
with this recording. Press Rec/Stop
to save the data and annotation.
The
microphone is
incompatible
with the
CoCo’s Voice
Annotation
feature.
The CoCo connects to a
microphone via a three conductor
3.5mm jack. The microphone must
have a 3.5 mm three conductor
plug consisting of a ground, mic
signal, and Push to Talk (PTT)
conductor. The PTT button signals
the CoCo to record the microphone
input.
Tachometer
not
detected or
reading
unstable.
Tachometer
threshold is
not properly
set.
Press Setup and select
Tacho/RPM. Select Read from the
tachometer measurement and
press F1 (Tacho Setup) to
configure the tachometer channel.
Press F2 (Pulse Detection) to set
the trigger level. Set the Detection
Threshold around 80% of the peak
voltage and press F6 (Apply).
Tachometer
on the wrong
channel.
Check that the tachometer is
connected to Channel 1 on the
CoCo.
IEPE input
shows
spikes
Intermittent
connection
between
sensor and the
CoCo.
Check along the length of the cable
for any signs of physical damage.
Bend the cable, moving along the
entire length to check for spikes on
the input channel. If the channel