3 - Installation
30
Controller Connections
The dc source connects to a controller either through an GPIB or an RS-232 connector.
GPIB Interface
Each dc source has its own GPIB bus address, which can be set using the front panel
Address
key as
described in chapter 5. GPIB address data is stored in non-volatile memory. The dc source is shipped
with its GPIB address set to 5.
Dc sources may be connected to the GPIB interface in series configuration, star configuration, or a
combination of the two, provided the following rules are observed:
♦
The total number of devices including the controller is no more than 15.
♦
The total length of all cables used is no more than 2 meters times the number of devices connected
together, up to a maximum of 20 meters. (Refer to table 2-2 for a list of GPIB cables available from
Agilent Technologies.)
♦
Do not stack more than three connector blocks together on any GPIB connector.
♦
Make sure all connectors are fully seated and the lock screws are firmly finger-tightened.
RS-232 Interface
The dc source has an RS-232 programming interface, which is activated by commands located in the
front panel
Address
menu. All SCPI and COMPatibility commands are available through RS-232
programming. When the RS-232 interface is selected, the GPIB interface is disabled.
The RS-232 connector is a DB-9, male connector. Adapters are available to connect the dc source to any
computer or terminal with a properly configured DB-25 connector (see Table 2-2).
1 2 3 4 5
6 7 8 9
Figure 3-5. RS-232 Connector
Pin
Input/Output
Description
1
-
no connection
2
Input
Receive Data (RxD)
3
Output
Transmit Data (TxD)
4
Output
Data Terminal Ready (DTR)
5
Common
Signal ground
6
Input
Data Set Ready (DSR)
7
Output
Request to Send (RQS)
8
Input
Clear to Send (CTS)
9
-
no connection
