932512A / 0114
ORTEC
®
EASY-NIM
™
928 Suite
5
2.6.
TROUBLESHOOTING
2.6.1.
MAESTRO Does Not Connect with the 928
If properly installed and functioning MAESTRO and/or Easy NIM software (or other C
ONNECTIONS
programs) cannot find
and communicate with the 928, check for the following:
●
NIM bin power.
●
Proper connection between rear-panel and NIM bin
●
Proper connection of the USB cable between the 928 and computer.
●
Re-run the MCB Configuration program and ensure the 928 is added to the instrument list. If it is not listed,
restart the computer then run MCB Configuration again.
For further assistance, contact your local ORTEC representative or our Global Service Center.
3.
THE EASY-NIM 928
3.1.
FRONT AND REAR PANEL CONNECTORS
Figure 3 shows the front and rear panels of the full Model 928. The front and rear panels of the three subsidiary
models are shown in Figure 2. Full specifications for all inputs and outputs are in Chapter 4.
3.1.1.
MCB Inputs and Outputs — 928 and 928-MCB Only
ADC INPUT
Front-panel BNC input accepts positive unipolar, positive gated integrator, or positive leading bipolar
analog pulses in the dynamic range from 0 to +10 V; +12 V maximum.
ADC GATE
Front-panel optional TTL input. Software selectable Coincidence mode, Anticoincidence mode, or Off.
PUR
Rear-panel BNC pile-up rejection input accepts TTL signal; signal must occur prior to peak detect.
BUSY
Rear-panel Busy input used by live-time correction circuits; accepts TTL signal.
3.1.2.
Counter/Timer Inputs and Outputs — All Modules Except 928-MCB
COUNTER 1, 2, 3, 4
Fast analog signal input accepts analog or digital pulses up to ±5 V in amplitude on a front-panel
BNC connector. Software selection of triggering on either positive or negative slope. Threshold is software adjustable
from –1.6 V to +3 V in steps of 1.5 mV (minimum pulse 30 mV). Software selection of either 50 Ω or 1000 Ω input
impedance, dc-coupled. Maximum count rate 200 MHz.
INPUT 1, 2, 3, 4, 5, 6
Front-panel BNC inputs accept any TTL input signal.
OUTPUT 1, 2
Rear-panel BNC outputs act as general purpose TTL outputs and can be configured under software
control to one of the following functions:
●
Timer Interval Output
High when the counting interval is active.
●
Logic Level
Set high or low from software.
