Chapter 3: Remote Operation

Serial Access

3.3Serial Access

The RS-232 connector provides serial access. The RS-232 connector is located between the NET Port and the front panel display (see Figure 1-1 on page 1-7). This connector is labeled “Serial I/O”, and is referred to as the “Utility Port.” Table 3-1below describes the Utility Port’s RS-232 pinouts and signal levels.

Serial time output is not available on the Utility Port.

Table 3-1: RS-232 Pinouts and Signal Levels

TimeVault

9- to 25- PIN ADAPTER CABLE

SIGNAL DESCRIPTION

 

9-pin

25-pin

 

 

 

 

 

OPEN

1

8

DCD, CARRIER DETECT

 

 

 

IN RXD

2– – – – – – <– – – – – – –3

TRANSMITTED DATA

 

 

 

OUT TXD

3– – – – – – >– – – – – – –2

RECEIVED DATA

 

 

 

 

OPEN

4

20

DTR, DATA TERMINAL READY

 

 

 

GND

5– – – – – – <>– – – – – – 7

SC, SIGNAL GROUND

 

 

 

 

OPEN

6

6

DSR, DATA SET READY

 

 

 

 

OPEN

7

4

RTS, REQUEST TO SEND

 

 

 

 

OPEN

8

5

CTS, CLEAR TO SEND

 

 

 

 

OPEN

9

22

RI, RING INDICATOR

 

 

 

 

3.3.1Serial Line Settings

Serial I/O settings are factory set and cannot be changed. The default serial format is:

Data Rates:

9600 bits/second

Word Length:

8 bits

Parity:

None

Stop Bits:

1

The Utility Port can be connected either to a terminal or to a computer, using a null modem cable, and used in conjunction with any serial access (terminal emulation) software program, such as Procomm or HyperTerminal. The following section illustrates a terminal connection, using HyperTerminal, a popular Windows-based application. All commands are input using conventional F-series type commands (see “Command List” on page 4-51).

These examples apply only to systems using Windows 95/98/NT. Check with your System Administrator if you are using a different operating system (such as Macintosh or UNIX).

3-42

TimeVault™ User’s Manual

6000-100Ch3.fm Rev. D

Page 56
Image 56
Symmetricom Time Server user manual Serial Access, Pin 25-pin