Measurement Computing Analyzer488 - Manual (Page 42)

Section 2 Getting Started
2.20
2.5.1 Edge Card Connector
The edge card connector allows easy monitoring of particular IEEE
488 bus lines with an oscilloscope, logic probe, or logic analyzer. Also a
compare (CMP) output is provided that pulses whenever the trigger match
pattern appears on the bus. These signals are not buffered and are
connected directly to the corresponding pins on the IEEE 488 connector.
View of Edge Card Connector
SRQ ATN EOI DIO8 DIO7 DIO6 DIO5 DIO4 DIO3 DIO2 DIO1 GND REN IFC NFRD NDAC DAV CMP GND
Data
Command
Handshake
Comp
2.5.2 Serial Port Description
The Analyzer488 is equipped with a standard DB-9S connector on its
rear panel and requires a standard DB-9P mating connector. The
Analyzer488 connector is configured as DCE type equipment for RS-232
communications, which means the Analyzer488 always transmits data on
Pin 3 and receives data on Pin 2. The following paragraph lists and
describes the RS-232 signals provided on the Analyzer488.