Type:
microphones/preamplifiers
Models:
Nor1206 ½ inch microphone preamplifier
Details:
A general-purpose half-inch preamplifier suitable for most applications – similar to Nor1201 except for the connector. The pinout of the connector is similar to the Nor1201, but it is equipped with an integral LEMO style connector with a threaded nut. This allows the preamplifier to be fastened securely to a Norsonic sound level meter, such as the Nor118. It has a very low self-noise level and is fitted with an electrical heating system for use in conditions where condensation may cause a problem. Its high input impedance ensures a good low frequency response and the output stage is especially designed to drive long cables with full frequency range.
There is a range of standard extension cables available including flat tape types to pass un
Preamplifier Nor1206 low frequency response for different microphone capacitances.der doors etc.
Maximum upper frequency vs. cable length:
Supply voltage 120V and assuming 50mV/Pa sensitivity:
SPL 10 m 20 m 50 m 100 m
150 dB 8 kHz 5 kHz 2 kHz 1 kHz
140 dB 35 kHz 20 kHz 12 kHz 5 kHz
130 dB >100 kHz 70 kHz 40 kHz 15 kHz
120 dB >100 kHz >100 kHz >100 kHz 60 kHz
110 dB >100 kHz >100 kHz >100 kHz >100 kHz
Maximum upper frequency as a function of cable length in metres for a supply voltage of 120V. THD<1%. Values apply to Nor1206 only. Other preamplifers may give other results.
Supply voltage28V and assuming 50mV/Pa sensitivity:
SPL 10 m 20 m 50 m 100 m
136 dB 15 kHz 8 kHz 5 kHz 2 kHz
130 dB 40 kHz 23 kHz 12 kHz 7 kHz
120 dB >100 kHz 70 kHz 33 kHz 16 kHz
110 dB >100 kHz >100 kHz >100 kHz 25 kHz
100 dB >100 kHz >100 kHz >100 kHz >100 kH
Maximum upper frequency as a function of cable length in metres for a supply voltage of 28V. THD<1%. Values apply to Nor1206 only. Other preamplifers may give other results.
Specifications:
Frequency range: 1Hz to 1MHz ±0.5dB
Input impedance: 20 Gohms, 0.2pF
Output impedance: 55 ohms @ 1kHz, CS: 20pF
Noise, A-weighted, CS 20pF: <2.2µV
Noise linear, CS 20pF: <5.7µV
Gain, typical: -0.15dB
Temperature, operation: -40 to +60°C
Temperature, storage: -40 to +85°C
Humidity, operation and storage: 0 to 95% RH
Current consumption (120V or ±60V): 2.3 mA
Current consumption (28V or ±15V): 0.9 mA
Heater impedance: 225 ohms
Heater voltage: 0-15V
Dimensions: Length: 127 mm
Diameter: 12.7 mm
Weight: 58 g
CE classification, EMC: EN50081-1, EN50082-1
CE classification, safety: EN61010-1, 1993 portable equipment pollution category 2