C7169 Datasheet, PDF (3/4 Pages) Hamamatsu Corporation – Power Supply for PMT Modules

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Counting Board M8784
The M8784 counting board is a PCI bus add-in board type counter. The M8784 func-
tions as a photon counter when combined with a photon counting head, etc.
The counter of the M8784 includes two counting circuits (double counter method) ca-
pable of counting input signals with no dead time. The internal memory allows pulse
counting over extended periods with a high time resolution (10 µs).
A maximum of two M8784 boards can be simultaneously controlled from a PC, mak-
ing it possible to perform simultaneous dual-channel measurements.
Initial setting for the M8784 is simple and easy due to PnP (plug and play). You can
start measurement on the day you receive the M8784.
The M8784 is designed to install into a PCI bus slot of desktop computers and cannot
be used with notebook-sized computers. When using a notebook computer, use the
C8855 counting unit also available from Hamamatsu.
• Also ideal for long-term data collection such as in biological clock monitoring *⁾
This is an ideal feature when the time needed to record count data in the memory is longer than the time needed to transfer the
count data to a PC and write it into the storage medium. This allows time-resolved measurement (minimum resolution: 10 µs)
over a long period of time . Memory recording time is calculated from "counter operation time × memory length".
(Example: minimum resolution 10 µs × maximum memory length 256 000 = 2.56 s)
*⁾ Standard sample software may not work at some conditions depending on the combination of measuring time and time resolution.
Please consult with our sales office in advance with information of your condition.
• Time-resolved measurement of chemiluminescence (minimum resolution 10 µs)
• Supports different kinds of measurements
The M8784 is fully controlled by DLL (dynamic link library) functions that come with the M8784.
All information on these DLL functions is available to support software programming that handles various types of user
measurement applications.
Parameter
Description / Value
Number of Input Signals
1 ch
Input
Signal Input Level
Signal Pulse Width
TTL positive logic
8 ns or longer
Input Impedance
50 Ω
Counter Method
Double counter method
Counter
Max.Count Rate
50 MHz
Max.Counter Capacity
2³² counts/counter gate
Counter Gate Mode
Internal, external, START-STOP
Counter Gate Internal Counter Gate Time
10 µs to 10 s (1, 2, 5 step)
External Counter Gate Time
100 ns or more
Trigger
Trigger Method
External Trigger Signal
Software or external trigger
TTL negative logic
Memory Method
Double memory method
Memory
Memory Capacity
128 000 (when capacity of 2³² is selected) / 256 000 (when capacity of 2¹⁶ is selected)
Memory Date Width
2³² (32 bit) / 2¹⁶ (16 bit)
General
Signal Input
TTL negative logic / 8 bit
Output Section Signal output
Open collector / 8 bit
Compatible OS
Windows^® 98/98SE/Me/2000
Bus Type
PCI
Supply Voltage
5 V / 1 A (supplied from PCI bus)
Size
Half size
Weight
150 g
Operating Ambient Temperature/Humidity
+5 °C to +45 °C / 80 % or less (no condensation)
Supplied: CD-ROM (containing instruction manual, device driver, DLL, sample software, etc.), Signal input cable (E1168-22),
General-purpose I/O connector (JAE: TXA20A-26PH1-D2P1-D1), Connection cable set (JAE: XHP-3, XHP-4)
*: Sample software is configured from Lab VIEW™ of National Instruments, Inc.
: Conforms to the EMC directive (89/336/EEC) of the European Union.
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