®
TECHNICAL SPECIFICATIONS
Jack connector
The external equipment is powered by 5 V (max. 1
A), delivered to the Tip of the plug. See figure.
The Ring of the plug is the signal fed into
the counter.
Triggering occurs on the falling
slope at c. 2 V.
The Sleeve is ground
The DIN connector
1. Ground
2. +8V
3. Photo
4. 6.3 V AC
5. 6.3 V AC
6. Microphone
The two supply voltages have a max. load of 1 A.
The Microphone input triggers on the falling slope
at c. 0.5 V. Sensitivity can be raised about 10 dB by
shorting the Photo input to ground.
Apart from this, the Photo input is strongly specia-
lized for use with Frederiksen’s photocell units.
Switch input
Triggering occurs on the
rising slope – i.e. when the
switch breaks – at c. 1.2 V.
When the switch is open,
the input is pulled up to
c. 7.4 V which must be ta-
ken into account if an elec-
tronic switch is used instead
of a mechanical one. The
generator impedance is c. 7.6 k
Ω
.
Pulse input
Triggering occurs on a falling slope at c. 70 mV (input
A) resp. 1.7 V (input B). The maximum peak voltage
tolerated is 50 V resp. 100 V for inputs A and B.
Mains power
The counter is powered by 230 V AC
The unit must be grounded and is provided with a
grounded power cord.
