Products_Embedded Board Advanet Inc.

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Features

VME bus compatible high-speed counter board with 8-channel input
Counter mode and timer mode for a wide variety of applications
All eight channels have a 24-bit length counter
Capable of measuring a maximum pulse repetition frequency of 100MHz
External gate signal can be used to add a gate signal from outside
Internal gate signal can be programmed within the range 1ms to 990s
By setting the internal register from the software, the internal gate signal of any channel can be output externally
The gate switching toggle switch on the front panel can be used to switch between external gate signal input and internal gate signal output
100ns, 1µs, 10µs or 100µs can be selected as the minimum resolution in timer mode
Counters can be used as a 48-bit counter by connecting them in a cascade connection
TTL or NIM level can be used as an input pulse signal
LED lamps for monitoring the status of input signals for each channel
Each channel has an independent interrupt vector, allowing various interrupt events to be issued
C-language sample program provided
Device driver for VxWorks available (option)

Specifications

Note: The following specifications and product appearance are subject to change for enhancement without notice.

Pulse input	No. of channels: 8 channels Input signal level: TTL/NIM (switch using a switch on the front panel) Maximum input frequency: 100MHz (minimum pulse width is 5ns) Input resistance: TTL: 1kΩ, NIM: 51Ω Connector: LEMO connector
External gate signal	No. of channels: 1 channel Input signal level: TTL Minimum pulse width: 160s (count enable for Hi level) Input resistance: 1.8kΩ Connector: LEMO connector (Shared use with internal gate input, Use the switch on the panel for switching)
Internal gate signal	No. of channels: 1 channel Input signal level: TTL Output current: Up to ±20mA Output signal switching: Set the register to allow the gate signal for any channel to be output externally Connector: LEMO connector (Shared use with external gate input, Use the switch on the panel for switching)
Operation mode	Counter or Timer mode can be programmed for each channel Counter mode: Measures the number of pulses while the internal or external gate signal is open 8 channels, 24-bit (can be connected in a cascade connection for use as a 48-bit counter) Programmable internal gate signal (1ms to 990s) Timer mode: Measures the time until a preset value is reached 20-bit comparator (every channel) 24-bit timer Programmable timer clock (100ns, 1µs, 10µs or 100µs)
VME busInterface	VMEbus Revision C.3 compliant A16: AM codes 29 and 2D D32/D16/D08(EO) Independent interrupt level and interrupt vector issued for each channel
Power requirements	DC5V±10%, Typ. 700mA DC-12V±10%, Typ. 40mA
Board size	262mm x 172mm x 20mm Double height/Single slot (excluding protrusions such as connectors)
Weight	Typ. 300g.

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