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Interface Capabilities
The baud rate, stop bits, parity, protocol, and data bits must be configured
exactly the same for both the controller and the Logic Analysis System to
properly communicate over the RS-232-C bus. The RS-232-C interface
capabilities of the HP 16500C Logic Analysis System are listed below:
•
Baud Rate: 110, 300, 600, 1200, 2400, 4800, 9600, or 19.2k
•
Stop Bits: 1, 1.5, or 2
•
Parity: None, Odd, or Even
•
Protocol: None or XON/XOFF
•
Data Bits: 8
Protocol
NONE
With a three-wire interface, selecting NONE for the protocol
does not allow the sending or receiving device to control data flow. No
control over the data flow increases the possibility of missing data or
transferring incomplete data.
With an extended hardwire interface, selecting NONE allows a hardware
handshake to occur. With hardware handshake, the hardware signals control
data flow.
XON/XOFF
XON/XOFF stands for Transmit On/Transmit Off. With this
mode, the receiver (controller or Logic Analysis System) controls
data flow and can request that the sender (Logic Analysis System or
controller) stop data flow. By sending XOFF (ASCII 19) over its transmit
data line, the receiver requests that the sender disables data
transmission. A subsequent XON (ASCII 17) allows the sending device
to resume data transmission.
Data Bits
Data bits are the number of bits sent and received per character that
represent the binary code of that character. Characters consist of either 7 or
8 bits, depending on the application. The HP 16500C Logic Analysis System
supports 8-bit only.
8-Bit Mode
Information is usually stored in bytes (8 bits at a time).
With 8-bit mode, you can send and receive data just as it is stored,
without the need to convert the data.
Programming Over RS-232-C
Interface Capabilities
3–8
Summary of Contents for 16501A LOGIC
Page 2: ...ii ...
Page 12: ...Contents 8 ...
Page 14: ......
Page 15: ...1 Introduction to Programming ...
Page 38: ...1 24 ...
Page 39: ...2 Programming Over HP IB ...
Page 45: ...3 Programming Over RS 232 C ...
Page 55: ...4 Programming Over LAN ...
Page 68: ...4 14 ...
Page 69: ...5 Programming and Documentation Conventions ...
Page 81: ...6 Message Communication and System Functions ...
Page 91: ...7 Status Reporting ...
Page 93: ...Figure 7 1 Status Byte Structures and Concepts Status Reporting 7 3 ...
Page 97: ...Figure 7 2 Service Request Enabling Status Reporting Key Features 7 7 ...
Page 100: ...Figure 7 3 Parallel Poll Data Structure Status Reporting Parallel Poll 7 10 ...
Page 105: ...8 Error Messages ...
Page 110: ...8 6 ...
Page 112: ......
Page 113: ...9 Common Commands ...
Page 116: ...Figure 9 1 Common Commands Syntax Diagram Common Commands 9 4 ...
Page 122: ...Figure 9 2 IST Data Structure Common Commands IST Individual Status 9 10 ...
Page 132: ...9 20 ...
Page 133: ...10 Mainframe Commands ...
Page 135: ...Figure 10 1 Mainframe Commands Syntax Diagram Mainframe Commands 10 3 ...
Page 136: ...Figure 10 1 continued Mainframe Commands Syntax Diagram continued Mainframe Commands 10 4 ...
Page 159: ...11 SYSTem Subsystem ...
Page 161: ...Figure 11 1 System Subsystem Commands Syntax Diagram SYSTem Subsystem 11 3 ...
Page 172: ...11 14 ...
Page 173: ...12 MMEMory Subsystem ...
Page 175: ...Figure 12 1 MMEMory Subsystem Commands Syntax Diagram MMEMory Subsystem 12 3 ...
Page 198: ...12 26 ...
Page 199: ...13 INTermodule Subsystem ...
Page 201: ...Figure 13 1 Intermodule Subsystem Commands Syntax Diagram INTermodule Subsystem 13 3 ...
Page 216: ...13 18 ...
Page 217: ...14 TGTctrl Subsystem ...
Page 219: ...Figure 14 1 Targetcontrol Subsystem Commands Syntax Diagram TGTctrl Subsystem 14 3 ...
Page 220: ...Figure 14 1 continued Targetcontrol Subsystem Commands Syntax Diagram TGTctrl Subsystem 14 4 ...
Page 233: ...Part 3 15 Programming Examples 15 1 Programming Examples ...
Page 234: ......
Page 235: ...15 Programming Examples ...