Chapter 6 ____________________________________________________________ Technical Data
VAISALA ______________________________________________________________________ 133
TM32 Radio Modem
Table 60
TM32 Radio Modem Specifications
Property
Description/Value
Interface
RS-232 compatible interface. User
configurable for common baud rates to
38,400 and parity. Interface does not
require hardware handshake control.
Power
External power supply range of 10 ... 26
VDC.
RF - 1.2W, 10.2W during TX.
Link rate
2400 or 4800 baud (optionally 9600
baud)
Transmission protocols
Fast asynchronous, transparent, packet
switched, digipeater, or TDMA.
Modulation
Gaussian Minimum Shift Keying (GMSK)
baseband modulation with programmable
transmit BT of 0.5 or 0.3.
FEC protocol
Hamming code (12,8) with data interleave
for burst error correction up to 20
consecutive bits in transparent and
packet modes of operation.
General radio specifications
Synthesized frequency control. Channel
spacing resolution of 6.25, 12.5 kHz, or
25kHz depending on model. Frequency
stability of 5 ppm.
Transmitter
Modulation distortion <5%. Duty cycle
100%. Transmitter attack time 10 ms.
Spurious and harmonic FM -55 dBc. FM
hum and noise -40 dB.
Receiver
Sensitivity -114 dBm (12 dB SINAD).
Adjacent channel selectivity -60 dB (25
kHz). Spurious and image rejection -60
dB. Intermodulation -60 dB. FM hum and
noise -40 dB. Conducted spurious -57
dBm.
RF connector
Environmentally sealed BNC (50 W)
Type acceptance
All models are type accepted and
certified for operation in the U.S. and
Canada.
Operating temperature
-22 ... 140
°
F (-30 ... +60
°
C)
Storage temperature
-67 ... 185
°
F (-55 ... +85
°
C)
Vibration/Shock
IEC 68-2-55
Enclosure
IEC 144/855420 IP 66 Dust-tight and
watertight.
Dimensions w
×
d
×
h
70
×
23
×
132 mm (2.75
×
0.9
×
5.2 in)
Weight
255 g (9 oz) excluding cable
