GE MDS SD Series Technical Manual page 90

82
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and wait for a poll and response before lowering it again. Connect the
RS-232 line to Pin 4 of the radio's
to be polled once per hour with a significant savings in power consump-
tion.
8.5 User-Programmable I/O Functions
The transceiver can be internally configured to provide three user I/O
functions on the and
COM1
commonly used for RTU resetting or for input monitoring. Once the
transceiver has been properly configured, these pins can be activated
through compatible NMS software, such as InSite.
The jumpering changes required to enable these functions are beyond
the scope of this manual. Consult the factory for further information on
enabling and using these I/O functions.
8.6 Technical Specifications
GENERAL
Frequency Range:
Specific frequency authorizations are dependent on the type-approval of the radio. Con-
sult the factory for details.
Bandwidth:
RECEIVER
Maximum Usable Sensitivity:
NOTE: This is a typical sensitivity rating at 9600 BPS. See modem type listing in Section
6.0 for detailed ratings.
TRANSMITTER
Carrier Power:
Power Measurement Accuracy:
NOTE: For SD2 operating in Band B (220-222 MHz), RF output limited to 2 watts.
Duty Cycle:
Output Impedance:
FCC ID:
SD Series Technical Manual
port. This allows each Remote
COM2
data connectors. These signals are
COM2
SD2: 216-235 MHz in one of 3 bands as follows:
Band A—216 to 220 MHz
Band B—220 to 222 MHz
Band C—220 to 235 MHz
SD4: 350–512 MHz in one of 3 bands as follows:
Band A—350 to 400 MHz
Band B—400 to 450 MHz
Band C—450 to 512 MHz
SD9: 928–960 MHz
SD2: 5.0, 6.25, 12.5, 25 kHz
SD4: 6.25 12.5, 25 kHz
SD9: 12.5, 25 kHz
–6
–112 dBm at 1x10 BER (9600 BPS)
0.1 Watts to 5 Watts
+/- 1.5 dB
Continuous
50 
SD2: E5MDS-SD2
SD4: E5MDS-SD4
SD9: E5MDS-SD9
MDS 05-4846A01, Rev. D