Furuno IB-681 - Manual (Page 43)

SP - 1
SPECIFICATIONS OF HSD MODEM UNIT
IB-681
1. GENERAL
(1) Tx Frequency 179.8 MHz
(2) Rx Frequency 90.0 MHz
(3) Channel Frequency Spacing 100 kHz
(4) Receive Level -60 dBm to -90 dBm
(5) Transmit Level -12.5 dBm
(6) Channel Rate 132 Kbps
(7) Modulation O-QPSK, 50% filtered
(8) Data Speed 56/64 Kbps, synchronous
(9) Interface RS-232C (Dsub25p), RS-449 (Dsub37p)
2. POWER SOURCE
(1) Rated Power 100/220 VAC (±10%): 0.3/0.2 A, 1 Phase, 50/60 Hz
3. ENVIRONMENTAL CONDITION
(1) Temperature -15 °C to +55 °C
(2) Relative Humidity 93% at +40 °C
(3) Water Resistance IPX2
4. COATING COLOR
(1) Cover 2.5GY5/1.5 Newtone No.5
(2) Panel N3.0