3B Scientific Millisecond Counter (230 V, 50__60 Hz) - Manual

3B SCIENTIFIC® PHYSICS
1
Millisecond Counter (230 V, 50/60 Hz) 1012832
Millisecond Counter (115 V, 50/60 Hz) 1012833
Instruction sheet
06/12 SD
1 4-mm-socket “Start”
2 4-mm socket “Stop”
3 4-mm socket “Ground”
4 Power supply socket
5 4-digit display
1. Safety instructions
The millisecond counter conforms to the safety
regulations for electrical test, control and laboratory
equipment as specified in DIN EN 61010 Part 1. It is
intended for use in dry rooms suitable for electrical
equipment or installations.
Safe operation of the equipment is guaranteed,
provided it is used correctly. However, there is
no guarantee of safety if the equipment is used
in an improper or careless manner.
If it is deemed that the equipment can no longer
be operated without risk (e.g. visible damage
has occurred), the equipment should be
switched off immediately.
• Use the equipment in dry rooms only.
• Only operate using the supplied plug-in
power supply.
• Do not exceed the maximum input voltage
of 5 V for the start and stop inputs.
2. Description
The millisecond counter is a compact counter for
measuring times in the millisecond range. It is
particularly well suited for use in experiments with
the free-fall apparatus 1000738. Counting starts
with a signal to the “Start” input and stops on one
to the “Stop” input. Zero calibration is carried out
automatically for each start. Both inputs respond
to a rising edge and feature internal pull-up resis-
tors.
The millisecond counter 1012833 is for operation
with a mains voltage of 115 V (±10%), and the
unit 1012832 is for operation with a mains voltage
of 230 V (±10%).
3. Contents
1 Counter
1 Plug-in power supply
1 Instruction sheet