User-Programmable I/O Functions; Technical Specifications - GE MDS SD4A Technical Manual

MDS 05-4846A01, Rev. F
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
COM1
functions on the
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 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:
Duty Cycle:
Output Impedance:
SD Series Technical Manual
COM2
port. This allows each Remote
COM2
and data connectors. These signals are
SD4: 300–512 MHz in one of the following bands:
Band A—350 to 400 MHz
Band B—400 to 450 MHz
Band C—450 to 512 MHz
Band D—300-360 MHz
SD4: 6.25 12.5, 25 kHz
–6
–112 dBm at 1x10
0.1 Watts to 5 Watts
+/- 1.5 dB
Continuous
50 
BER (9600 BPS)
95