Explanation/Annotation:For determination of psophometric and unweighted noises and signals in kana
l of tone frequency, in audio broadcast channels and sound ñîïðî
television driving.
Detailed model description:ÈØÑ-Í× - are provided to measure voltages of noise and their levels;
unweighted in frequency band of tone channel (Ò×) from 300 to
3400 Hz in compliance with Gost 21655-87; psophometric in page
frequencies of tone channel in compliance with CCITT recommendations of R.. 53;
unweighted, as well as psophometric in audio broadcast channels
(contaminant) in compliance with CCIR recommendations 468-3 1982. unweighted in
frequency band 0. 05. 110 kHz, as well as with external filters in any
interval mentioned page and ripple voltages in circuits
power supply of direct current constrainedly of current supply to 206 in
with external filters according to the state standard 5237-83. The device is intended for
measurement of mean square root of signal voltage in
accordance with CCITT recommendations of R. 53, as well as measurement
quasi-peak significances of noises and signals in accordance with recommendations
IRCC 468-3 1982. with characteristic of quasi-peak detector from 5 incineration facilities and
higher. The device provides the joint work with digital determinant
mean power of ÖÎÑÌ and are included in set of noise measuring meter
low frequency ÈØ-Í×. In device there is the exits for connecting
recorders and connectings of telephones. Are provided
the remote control of all management bodies and statement exit
indicator in digital code. The device may be used in case of
temperatures from - 10ãðàä. With to + 50ãðàä. S.
main technical characteristics:
1. Range of level measurement, decibels: a). on main entry from - 90 to +12
b). on additional input from - 70 to +32
2. Measurement range on voltage, in: a). on main entry from
0. 03*0, 001 to 3; b). on additional input from 0. 3*0, 001 to 30
3. Measurement limits for relative level measurements (OWF):
- 13; - 9; - 3. 5; + 4; +6 decibel
4. Calibration error +0. 2 decibels
5. Inaccuracy from limits switching +0. 2äÁ
6. Inaccuracy from OWF switching +0. 3äÁ
7. Integration time 0, 2; 3ñ; quasi-peak condition
8. Sending-end impedance, Omagh
- on main entry: 150, 600, no less than 10 lumps
- on additional input no less than 50 lumps
9. Device mass 15êã
10. Overall dimensions: 506õ337õ135 MM
11. The device food is carried out from ac network
voltage 220 in, frequency 50 cycles |
