44 Chapter 2
E4438C Vector Signal Generator Overview
Rear Panel Overview
16. GPIB Connector
The GPIB connector allows communications with compatible devices such as external controllers. It is
functionally equivalent to the LAN and RS 232 connectors.
17. RS 232 Connector
This female DB-9 connector is an RS-232 serial port that can be used for controlling the signal generator
remotely. It is functionally equivalent to the GPIB and LAN connectors. The following table shows the
description of the pinouts. Figure 2-6 shows the pin configuration.
Figure 2-6
18. LAN Connector
LAN based communication is supported by the signal generator via the LAN (local area network) connector.
The LAN connector enables the signal generator to be remotely programmed by a LAN-connected
computer. The distance between a computer and the signal generator is limited to 100 meters (10Base-T) on
a single cable. For more information about the LAN, refer to the E4428C/38C ESG Signal Generators
Programming Guide.
Table 2-1 RS 232 Connector
Pin Number Signal Description Signal Name
1 No Connection
2 Receive Data RECV
3 Transmit Data XMIT
4+5 V
5 Ground, 0 V
6 No Connection
7Request to SendRTS
8 Clear to Send CTS
9 No Connection
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rear panel connector
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