BNC 6040 - Manual (Page 21)

21
OPERATING INFORMATION
Plug-In Module Receptacle
The plug-in module receptacle is on the right side of the front panel, and accepts a single BNC 6040
plug-in module. The receptacle consists of an alignment guide, one 40-pin edge connector, and one
ConheX coaxial connector.
The 40-pin edge connector allows the 6040 mainframe to control and communicate with the module
and also supplies the power to the module.
The ConheX connector delivers the high speed pulse generator DRIVE signal to the module. This
signal is an ECL version of the mainframe's front panel PULSE OUT.
REAR PANEL DESCRIPTION
Located on the rear panel are the GPIB and RS-232 bus interface connectors, the ECL OUT jack,
MODULE DISABLE jack, RESET pushbutton, line voltage selection switch and fuse. There is also a
heat sink for the power supply regulators, a line cord receptacle and the cooling fan.
GPIB Connector
In the upper left corner is the connector for interfacing with an IEEE-488 GPIB bus. This allows full
control of the unit via a remote controller. All front panel settings can be controlled and any parameter
can be read.
RS-232 Connector
In the upper center-left corner is the RS-232 connector. As with the GPIB bus, all front panel settings
can be controlled and all parameters read.
ECL OUT Connector
This SMA connector provides an Ed version of the PULSE OUT output. Negative pulses, switching
from -0.8 V to -1.8 V (standard ECL "low true" levels) with transition times of 700 ps, are produced
nominally coincident with the positive pulses generated from the PULSE OUT jack.
MODULE DISABLE Jack
The MODULE DISABLE jack is used in conjunction with optical plug-in modules. This allows the user to
disable the module output from a remote location. The connector is an audio phone jack that is
normally closed (grounded). When a phone plug is inserted, the jack leads are opened so a plug with a
two conductor cord and a switch can be used for control. Whenever the switch is open, the module
output will be disabled.