JRC JSS-2150 Instruction Manual page 137

DSC Watch Keeping Receiver
Reception frequency
Receiving system
1st IF
2nd IF
Frequency stability
Sensitivity
Passband
Spurious response
Blocking/Desensitization
Conducted spurious emission
Antenna impedance
DSC Modem
Modulation rate
Modulation method
Mark frequency (Y)
Space frequency (B)
DSC protocol
DSC operation standards
DSC code
Message storage
Antenna tuner
Frequency range
Max. input power
SWR after tuning
Tuning method
Tuning time
Power supply
Controller
Communication speed
Communication interface
Microphone input impedance
Standard modulation input
Audio output
LCD display
Distress and safety frequencies of 2187.5 kHz and 8414.5
kHz, and additionally on one or more of the 4207.5 kHz/
6312.0 kHz/ 12577.0 kHz/ 16804.5 kHz
Double superheterodyne
40.04025 MHz
40.25 kHz
Within ±10 Hz
1% or lower symbol error rate at reception input voltage of
1µV
6 dB bandwidth
30 dB bandwidth
60 dB bandwidth
Symbol error rate of 1% or better when an unwanted signal
level of 31.6 mV is applied to a wanted signal level of 10
uv from an intermediate frequency separated by 750 Hz or
more through to a frequency 3x the test frequency
Symbol error rate of 1% or better at a wanted signal level
of 10 uV and an unwanted signal level of 1 mV separated
by 500 Hz
Power emitted from antenna terminal is 2 nW or less.
50Ω unbalanced
Within
100 baud ±30ｘ 10
FSK (sub-carrier: 1700 Hz)
Transmission
Reception (permissible value) : Within 1615 Hz ±20 Hz
Transmission
Reception (permissible value) : Within 1785 Hz ±20 Hz
ITU-R recommendation M.493-11 (Class A and B)
ITU-R recommendation M.541-9, M.821-1
10-bit error detecting code
20 messages for distress and 20 messages for others
1605.0 - 27500.0 kHz
1605.0 - 3999.9 kHz
4000.0 - 27500.0 kHz
2:1 or less
Preset or auto-tuning
Preset tuning: 0.5 secs, auto-tuning: max. 45 secs
24 VDC (21.6 VDC to 31.2 VDC)
57.6 kbps
RS-485 and RS-232C, and Centronics compliant
150Ω balanced
-54 dBm
Internal loud speaker (8Ω)
External speaker impedance : 8Ω or more
Handset phone (150Ω)
3.8 inch FSTN monochrome, 320 x 240 dot, LED backlight
: 270 - 300 Hz
: Within ±380 Hz
: Within ±550 Hz
- 6
: Within 1615 Hz ±0.5 Hz
: Within 1785 Hz ±0.5 Hz
: 150Wpep
: 200Wpep
: 5W max
: Rated 1mW or more
Specifications
9-3