3B Scientific Digital Counter (115 V, 50__60 Hz) - Manual (Page 4)

3B SCIENTIFIC® PHYSICS
1
Digital Counter U8533341
Instruction sheet
09/07 TLE / SP
1 “Reset / Hand Enter” button
2 “Stop / Hand down” button
3 “Start / Hand up” button
4 Switch for acoustic counter signal
5 LED display, operating mode and measuring
ranges
6 Display
7 “In Stop” socket
8 “Out Start” socket
9 “In Start / Count” socket
10 BNC socket for Geiger-Müller tube
11 Earth terminal
12 Input A for light barrier
13 Earth terminal
14 Input B for light barrier
15 Selector switch for operating mode and meas-
urement period
1. Safety instructions
The counter is intended for operation in dry rooms
suitable for the use of electrical equipment.
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 and secured against any inadvertent
use.
• The equipment may only be powered using the
plug-in power supply provided
• Before setting up or starting any experiments,
make sure that there is no damage to the insu-
lation and that no wires are exposed.
• Only trained electricians are permitted to open
up the apparatus’ housing.