PAS 9782/GEN : 8 Channel VME Sine/Pulse
Generator Card
Links to printable product info:
The PAS 9782/GEN is a VME based, eight channel function generator
card. Each channel contains a Direct Digital Synthesis
(DDS) chip that can be programmed to generate sine wave output
signals. This DDS device is a Numerically Controlled Oscillator
(NCO), employing a phase accumulator, a sine look-up table and
a 10 bit D/A converter. The input clock frequency to the
DDS chips is 2 MHz. This input frequency combined with
the chips thirty-two bit phase accumulator provides a frequency
resolution of 0.000465 Hz. The maximum useable output frequency
is approximately 500 KHz.
A programmable gain amplifier is provided on each channel, following
the NCO. This allows the card to be programmed for full scale
output ranges from +/- 1 volt to +/- 10 volts. In addition
to the sine wave output a TTL output and open drain FET output
are provided on each channel.
This card can be used in VME systems
with A16, A24, or A32 addressing, and data bus widths of 16 and
32 bits are supported. Jumper
plugs are used to configure the width of the address bus. VME
instruction types determine the width of the data bus. The
input signals are connected to a pair of DB37 female connectors
mounted through the front panel. A board identifier PROM,
control register and DDS frequency control registers are provided
as well.
Key Features
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8 Channel Direct Digital Synthesis (DDS) Waveform
Generator
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Each channel provides sine wave, TTL square wave and
open
drain
FET outputs
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Programmable Gain Amplifier per channel provides
sine wave
output
of +/- 10V, +/- 5V, +/- 2V or +/- 1 Volt peak to peak
-
Output
frequency is controlled by a 32 bit frequency register; each
channel provides an independent frequency register
-
Output
frequency is set by the following equation:
F(out) = F register value x 2 MHz divided by 2^32
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Output phase
is controlled by 2 each 12 bit phase offset registers; each
channel provides two independent phase offset
registers
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All channels are clocked by a common 2 MHz crystal
controlled oscillator
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Sine wave output amplifiers provide a
low pass filter with a 3dB corner frequency of 300 KHz
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VME
6U form factor, 233mm x 160mm card size
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VME access: A32, A24,
A16; D16 slave – No VME interrupts
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Board also provides
ID code (VMEIDPAS9782GENA), control and status register
and 2 status LEDs
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Operating temperature range 0 to 60 deg. C
-
Custom version available
upon request
Contact us for current pricing:
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