VX4357 A–15
Appendix E: Performance Verification Procedure
The performance verification procedure for the VX4357 Relay Switching Module checks that the
module is operating within specification.

Conventions Used In This Procedure

Please familiarize yourself with the following conventions which apply throughout this proce-
dure:
All control of the VX4357 Module will be accomplished through a VXI Slot 0 device. ASCII
characters will form the commands sent to control the module and ASCII characters will be
read from the module.
Throughout this document writes to the VX4357 Module will be shown as: Send “Q1lf”
Where Q1lf is the command (Query relay one) terminated with a linefeed character (lf).
Commands must be sent exactly as shown.
Reads from the module are shown as: Read “0 crlf”
Where 0crlf is the ASCII string returned from the VX4357 Module, terminated with a carriage
return and linefeed (crlf). The ASCII string returned from the module will be exactly as
shown.
Unless noted, all commands are sent to the VX4357 Module and all ASCII strings read are
read from the VX4357 Module.
Two characters are used throughout the communication sequences: “cr” is the carriage return
character (character 13) and “lf” is the line feed character (character 10). These characters are
the terminating characters for communication. They are shown throughout this document in
the font shown here. Most reads from the VX4357 Module are terminated with both
characters and are shown as “crlf”. Writes to the module require only a “lf”, but both
characters may be used.
An ASCII upper case alpha character “O” will be shown as “O”, and an ASCII numeric zero
will be shown as “0”.