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Getting Started
TDS 310, TDS 320 & TDS 350 Programmer Manual
1Ć3
Example
Programs
Example
Programs
Figure 1Ć4:ăThe Disks That Accompany This Manual
If you received your Option 14 Communications Interface in a separate shipĆ
ment, you must install it before remote communications is possible.
Use the procedure in your TDS 300 Series TD3F14A I/O Interfaces Upgrade
Kit to install your Option 14 module.
Your system hardware may let you choose which interface to use with your
system; if so, you should consider the comparative advantages and disadĆ
vantages of each interface. For example, the GPIB interface is an eight bit
parallel bus and, therefore, it offers highĆspeed data transfers and multiple
instrument control. In contrast, the RSĆ232 interface is a slower serial data
bus for single instrument control, but it is easy to connect to and can be used
with a lowĆcost controller. Table 1Ć1 compares the GPIB and RSĆ232 interface.
TableĂ1Ć1:ăGPIB and RSĆ232 Comparison
Operating Attribute
GPIB RSĆ232
Cable IEEEĆ488 Std. 9Ćwire
Data flow control Hardware, 3Ćwire handĆ
shake
Flagging: soft (XON/
XOFF), hard (RTS/CTS)
Data format 8Ćbit parallel 8Ćbit serial
Interface control Operator lowĆlevel conĆ
trol message
None
Interface messages Most IEEEĆ488 Std. Device clear via break
signal
Interrupts reported Service requests
status and event code
None. Must be polled for
status.
Message termination
(Receive)
Hardware EOI, software
LF, or both
Software CR, LF, or
CRLF, or LFCR
Installing The
OptionĂ14 Module
Choosing an
Interface