3B Scientific Digital Counter (115 V, 50__60 Hz) - Manual (Page 6)

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Subject to technical amendments
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• Confirm the period by pressing "Reset" (1). The
display will flash briefly then reset to "0".
• Pressing "Start" (3) activates the counter input
and the "GATE" LED (5) lights, indicating readi-
ness to count.
4.4 Frequency measurement
• Set the selector (15) to f A (Hz or kHz).
• Apply an input signal to terminal (9).
• Start measurement by pressing "Start"(3)
The "GATE" LED (5) lights, indicating readiness to
count.
4.5 Geiger counter
• Connect a Geiger-Müller tube to the BNC socket
(10).
• Set the selector switch (15) to the desired
measuring period or select N
A( ) to set the
time manually.
• You can turn the acoustic signal on or off (4).
• Press "Start" (3). The counter now counts all
the events occurring within the programmed
period.
• After the measurement, either use "Reset"
button (1) to set the count back to zero or con-
tinue counting from where it left off.
5. Care and maintenance
• Disconnect the equipment from the mains
before cleaning.
• Use a soft damp cloth to clean the equipment.
• Store the equipment in a dry place with as
little dust as possible.
• Do not use cleaning agents with solvents.