User Manual

OSMAC BaseOSMAC Base User Manual
Page 40
External keyboard interface........................................................Standard PS/2
Telephone interface....................................................................RJ-11 female, DTMF signaling
DTMF signaling timing..............................................................> 40 mS (telco receive mode)
> 100 mS (radio receive mode)
100 mS (telco transmit mode)
Alarm/data inputs........................................................................8
RF Section
RX channel spacing....................................................................12.5kHz (narrowband) or 25kHz (wideband)
models available
Frequency Stability.....................................................................2.5ppm (12.5kHz BW version)
5ppm (25kHz version)
RX Sensitivity..............................................................................0.5uV for 12dB SINAD
0.35uV for 12.5kHz version)
RX Modulation acceptance.......................................................±2.5kHz for 12.5kHz versions
±5kHz for 25kHz version
RX Intermodulation.....................................................................55dB
RX Image and 1/2 if rejection.....................................................55dB
RX Selectivity..............................................................................55dB (25kHz version)
55dB (12.5kHz version)
TX power output.........................................................................2 or 4 watts nominal,
selected via internal jumper for some versions
and factory programming for others.
FM hum and noise......................................................................38dB or better
Spurious emissions.....................................................................-52dBc
Modulation...................................................................................Frequency Modulation
Modulation limit ..........................................................................±4.5kHz or ±2.25kHz, programmable by
channel.
Emission Designators.................................................................16K0F1D, 11K0F1D, 16K0F3E, 11K0F3E
The above specifications are preliminary product specifications, and are subject to change, without notice.
Ordering
6A373
-⇓ -⇓
OSMAC Base Communication system
Built-in Transceiver
N Narrow band transceiver (12.5kHz)
W Wide-band transceiver (25kHz)
UA UHF band, 403-416MHz*
UC UHF band, 450-470MHz
UD UHF band, 470-480MHz*
E Encode only, no transceiver
* (For export only, not FCC approved)
For example, a VHF wide-band OSMAC BaseOSMAC Base in the 150-174MHz band is part number 6A373-VB-W.