Microwave Data Systems MDS 4310 Installation, Operation & Field Maintenance page 22

Diagnostics & Programming Interface (through
Signaling Standard:
Connector:
I/O Devices:
System Data Characteristics (through
Signals:
Data Rates—
AFSK:
FSK:
Data Turn-Around Time:
CTS Delay:
MDS 05-2415A01, Rev. A
INTERFACE
RS-232C Interface
DB-25
• MDS Hand-Held Terminal
• IBM PC or compatible computer with CGA,
EGA, VGA or Hercules Graphics™,
DOS 2.0 or later and 640K of memory.
connector)
INTERFACE
without modem
Transmit Audio Input
Filtered Receiver Audio Output
Receiver Unsquelched Sensor (RUS)
Received Signal Strength Indicator (RSSI)
Out-of-Lock Alarm
PTT/ PTT
added with internal modem
RS-232 Compatible Data Lines
RXD TXD
RTS CTS
DCD DSR
ETC* TC*
RC*
* w/synchronous FSK only
50 to 9600 bps—Asynchronous audio
interface using external modems
30 to 1200 bps—Asynchronous w/internal
Bell 202T compatible modem
50 to 4800 bps—Asynchronous, w/internal
direct FSK interface
4800 bps—Async/Synchronous, w/internal
direct FSK interface
9600 bps—Async/Synchronous, w/internal
direct FSK interface
10 ms, including RTS/CTS time delay with
internal modem installed
5 to 255 ms,
Programmable in 1 ms increments
GENERAL
connector)
1-9