Symmetricom TimeSource 3000 Manual page 77

S S S S S S S S S
Communication Port 1
To provide an RS-232 link for TL1 command access to the TimeSource 3000, connect to
port 1 at the female 25-pin D connector labeled COM 1. See Figure 11 for the location of the
connector. See Table F for the connector pinouts.
The COM 1 connector transmits data on pin 2, and receives data on pin 3. Be sure the other
equipment receives data from the transmitting pin, and transmits data to the receiving pin.
Table F. COM1 Pinouts
Pin
2
3
4
5
6
7
20
TimeSource 3000
Installation
097-72000-02 Issue 6: October 2003
S S S S S S S S S
Signal
Transmit data
Receive data
Request to send
Clear to send
Data set ready
Signal ground
Data terminal ready
Note: Pins not listed are reserved for future use
S S S S S S S S S
Abbreviation Direction
TXD From TimeSource 3000
RXD To TimeSource 3000
RTS From TimeSource 3000
CTS To TimeSource 3000
DSR To TimeSource 3000
GND —
DTR From TimeSource 3000
S S S S S S S S S
2
3
5
S S S
3
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