Signal Input/Output Connector; Scanner Interface Input/Output Signals - Keysight E4980A User Manual

Scanner Interface

Signal Input/Output Connector

Signal Input/Output Connector
The scanner interface I/O connector, a 14-pin amphenol connector, is
mounted in the option slot of the E4980A/AL's rear panel for interconnection
between the E4980A/AL and the scanner.

Scanner Interface Input/Output Signals

The scanner interface I/O signals are divided into the following three types:
— Channel selection input signals
— Control output signals
— Control input signals
Each signal is described in detail below.
Channel selection input signals
These signals are used to select the correction data that correspond to the
channel number of the scanner.
Since there are 128 channels, the /CH0 to /CH6 bits are manipulated.
Control output signals
These signals are used to control the timing between the E4980A/AL and the
scanner.
-486
/CH0 to /CH7 Channel selection signals (8-bit, binary input). Select
the correction data corresponding to the channel of
the scanner. The most significant bit is /CH7 and the
least significant bit is /CH0.
/CH_VALID Channel valid signals. This signal makes the channel
number set by the channel selection signals valid or
invalid.
/INDEX Analog measurement complete. Since this signal is
asserted when an analog measurement is completed,
the channel can be switched to the next one.
Measurement data, however, cannot be obtained until
/EOM is asserted.
/EOM End of measurement. Since this signal is asserted
when a series of measurement is completed, the
E4980A/AL moves to the next measurement. When
this signal is asserted, the measurement data and the
comparison results are valid.
Keysight E4980A/AL User's Guide