Manual

How to insert the battery
• To insert the battery, press the push-pin in and slide the
sleeve off.
• Insert 1x 1.5V AA-size battery according to drawing
below. The polarity is marked on the lable inside.
• Close the MiniSPL. Turn the sleeve so that it is locked
by the push-pin.
Note: The MiniSPL does not operate without the
battery.
MiniSPL with AL1 / ML1
• Connect the MiniSPL to the AL1 / ML1.
• Approximately ten seconds later the Status-LED will
start to ash periodically indicating that the MiniSPL
has switched on.
• An empty battery will be indicated by the non-ashing
Status-LED.
• Simply unplug the MiniSPL after completed operation.
Thus the Status-LED will stop ashing, indicating it is
switched off.
MiniSPL as stand-alone mic
The MiniSPL may be operated as a stand-alone microphone
e.g. connected to a balanced audio-line, a microphone-
input or a sound-card.
Note: Follow the specied load condition to achieve the
at frequency response. Phantom power causes a lower
load condition, so make sure to switch it off.
At inputs with high DC-input resistance you may nd the
MiniSPL not switching on or the delay-time until switching
on may be too long. In this case you have to build up an
adapter according to the below circuit diagram. Please note
that both resistance ’’R’’ should be of equal values within
1% tolerance for good signal balancing.
At unbalanced inputs use pin 1 and 2. Pin 3 shall not be
connected. In this case the sensitivity will be halved.
Technical Data MiniSPL
Notes & Warnings
To avoid any problems during the operation of the instru-
ment, follow the rules listed below:
• Use the instrument for the intended purpose only.
• Never use the instrument in a wet environment.
• Remove the batteries as soon as they are at or if the
instrument is not intended to be used for a longer period
of time.
• The use of rechargeable NiCd- or NiMH-batteries is
causing shorter battery lifetime than specied.
• Note the correct polarity of the inserted battery.
• We recommend to calibrate the MiniSPL in yearly inter-
vals to fulll the specied sensitivity.
R = 10 kOhm .. 100 kOhm
2
1
3
R
connect
MiniSPL
Life
Ground
Return
connect
audio-input
Microphone Type 1/2”, omni-directional,
pre-polarized condenser,
free eld transducer
Sensitivity balanced (20 ±2) mV/Pa
unbalanced (10 ±1) mV/Pa
@ 1 kHz, 20°C
+0.05 dB
SPL
/ °C
Frequency Response acc. to IEC61672, Class 2,
tolerance curve is shown on
typical calibration certicate
Output balanced
Peak Acoustic Input 130 dB
SPL
@ 1 kHz
Noise 32 dB
SPL
, A-weighted
Load Conditions 20 - 200 kOhm balanced,
to achieve this always switch
PHANTOM POWER off.
Power Supply 1x AA battery 1.5 V,
battery lifetimetypical 300 hrs,
no phantom power supply,
phantom power resistant
Dimensions dia 22 mm, length 180 mm,
dia 0.87”, length 7”
Weight 100 g ( 3.5 oz ) incl. battery
Temperature 0° to +45° C (32° to 113° F)
Humidity < 90 % R.H., non condensing
Conforms to the
Normative Standards
EMC-Directives:
89/336, 92/31, 93/68
Harmonized Standards:
EN 61326-1
Push-pin Calibration label
1
2