2.6. Specifications
Operating frequency range ...............................................................................5 to 900 MHz
Resolution.................................................................................................................125 kHz
Channel allocation standard .................................... China, PAL B/G, PAL Ireland, PAL UK,
.................................................................................. Secam D/K, France, NCTA, Australian
Input parameters:
a) input impedance within operating frequency range: 75 Ohm;
b) input impedance for frequencies up to 50 Hz at least: 200 kOhm.
Allowed resulting value of AC input voltage for frequencies over 5 MHz: 3 V.
Allowed resulting value of AC and DC input voltage for frequencies
under 5 MHz: 150 V.
Built-in attenuator....................................................................................................20, 40 dB
Input mismatch attenuation
- Input attenuator off ............................................................................................ 14 dB
- Input attenuator on ............................................................................................ 18 dB
Level measurement range with manual attenuator setting
- Input attenuator off ............................................................................... 30 to 90 dB
μ
V
- Input attenuator 20 dB ........................................................................ 50 to 110 dB
μ
V
- Input attenuator 40 dB ........................................................................ 70 to 126 dB
μ
V
Measurement level resolution ..................................................................................... 0.1 dB
Accuracy within 30-126 dBµV level range .................................................................±1.5 dB
Accuracy at operating temperature............................................................................±2.2 dB
Measurement channel passband for -3 dB level...............................................230 ± 60 kHz
Frequency indication............................................................................. 6 characters on LCD
Channel number indication ................................................................... 3 characters on LCD
Signal level indication ........................................................................... 4 characters on LCD
Warm-up time ............................................................................................................ 10 min.
IT-081 can be powered by
- AC circuit with 110-240 V voltage, 50 ± 0.5 Hz frequency with no more than
5% harmonic content, via PS12/0.8 Mains Adapter;
- external DC source with 12 ± 0.6 V voltage, and no more than 0.5 V ripple;
- batteries with capacity at least 2100 mAh;
Current consumed from external power source or batteries ......................................... 0.8
А
Continuous stable operation under normal conditions
(when powered by external source).............................................................................24 hrs
Battery duration under normal conditions
(2100 mAh battery capacity) ......................................................................................6 hours
Mean time between failures, no less than.......................................................... 10000 hours
Average lifetime, no less than.................................................................................... 5 years
Dimensions ................................................................................................... 200x90x55 mm
Shipping dimensions................................................................................... 400x300x90 mm
Weight.......................................................................................................................... 0.6 kg
Weight in package ....................................................................................................... 2.2 kg
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