JRC JHS-431, Инструкция по эксплуатации, Страница: 26 / 40

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11 Specifications
11.1 General
Intrinsically safe:
ATEX Directive 94/9/EC
II2G Ex ib IIA T3 Gb
II2D Ex tb IIIC T160
°C Db IP67
Connected battery pack: BP-227AXD
Standard frequencies:
CH1
457.525MHz
CH2 457.550MHz
CH3 457.575MHz
Optional frequencies:
(CH4
467.525MHz)
(CH5 467.550MHz)
(CH6 467.575MHz)
Communication mode:
Simplex
Type of emission:
F3E(G3E)
Antenna:
Whip antenna, non-directional
(nominal 50 Ω unbalanced)
Power source:
Li-Ion battery (7.4V,1850mAH)
Consumption current:
Transmission:
Approx. 1.1A
Reception: Approx. 300mA
Standby: Approx. 85mA
Operating temperature:
-20°C to +60°C
(-20°C to +55°C for Intrinsically safe )
(+0°C
to +40
°C for charging)
(Range of performance guarantee in
transceiver unit is +5°C to +35 °C)
Continuous service time:
Approx 10 hours
(*Typical operation
Tx:Rx: Standby =1:1:18)
Compass safe distance:
0.7
meter
Humidity:
+35
°C, 95% RH
Water-proof:
1 meter under the surface of water
for 30 min.
Dimensions:
56 mm(W)˜97 mm(H)˜36.4 mm(D)
(excluding projections)
Mass: Approx. 285 g
(including the battery pack)
11.2 Transmitter
Output power:
2 watt + 0%, -50%
(Low Power mode :
less than 0.2 watt)
Frequency accuracy:
Within ±5 x 10
-6
or less
Oscillator:
PLL frequency synthesizer
Modulation:
Variable reactance frequency
modulation Maximum frequency
Deviation:
Within ±5 kHz
Modulation frequency:
300 Hz to 3000 Hz
Spurious emission:
2.5
μ W or less
Occupied frequency band width:
16 kHz or less
Total distortion and noise:
20 dB or more in standard modulation
Modulation input impedance:
2.2
k Ω
Standard modulation input level:
Approx.
15 mV
11.3 Receiver
Receiving system:
Double
superheterodyne
Intermediate frequencies:
1st:46.35 MHz, 2nd: 450 kHz
Local oscillation frequency:
1st Lo Reception frequency
-46.35 MHz
2nd Lo: 45.9 MHz
Radiation:
2 nW or less
Local frequency stability:
Within ±5 x 10
-6
or less
Sensitivity:
8
dB μ (2.5 μ V) or less by 20dB NQS
Total distortion and noise:
20 dB or more
Demodulation Frequency:
300 Hz to 3000 Hz
Rated AF output:
Approx. 350 mW
Speaker impedance:
8
Ω