JDS Uniphase RX3 Series, Руководство пользователя

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Programming Guide
The following programming instructions for the RX3 meter are intended for users who are
familiar with remote interfaces and how to send or receive messages over a device.
A detailed description of the GPIB interface is in
ANSI/IEEE Std. 488.1-1987 IEEE Standard
Digital Interface for Programmable Instrumentation published by the Institute of Electrical and
Electronics Engineers.
There are two external interfaces for remote control of the RX3 meter: a GPIB parallel interface
and an RS232 serial interface. Via either interface, the meter can be controlled by a computer
and can transmit the measured values of backreflection, absolute power, and relative power to
external devices, such as a printer. A measurement is transmitted as ASCII text in the same
format as it is displayed on the meter, but preceded by a two-letter code—BR (backreflection),
AP (absolute power), or RP (relative power).
Both interfaces can be set to emulate the interface command set of JDS Uniphase RX1000
Series Backreflection and Loss Test Sets. In RX1000 emulation mode, the measurements
displayed by the RX3 meter include the prefixes BR+, PR=, and L= to identify backreflection,
power, and loss measurements, respectively.
The RX1000 displayed loss is the negative value corresponding to the value of the displayed
relative power.
GPIB Interface
GPIB Interface Pin Assignment and Functions
The required GPIB pin assignment is shown in Figure 15 and the functions are listed in Table
10.
Figure 15: GPIB Pin Assignment
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