53A·243 – Arbitrary Waveform Generator (ARB) Card
53A-729 – Adapter Cable
OPT XX – User-specified Length in Feet (48 max)
53A-730 – Adapter Cable
OPT XX – user-specified Length in Feet (48 max)

• Analog output of ±5V into a 50 Ohm load
• 10-bit vertical resolution
• Sample update rates programmable from 1.5 Hz to 25 MHz in 40 nanosecond steps
• Waveform may be up to 16,384 samples; may be repeated from 1 to 255 times or continuously
• Programmable breakpoints to temporarily pause the output waveform until the ARB is retriggered

The 53A-243 Arbitrary Waveform Generator (ARB) produces a series of voltage samples to create precise sine, triangle, square, or other user-defined arbitrary waveforms. The ARB produces an analog output of ±5V in digital steps having 10-bit resolution (10 mV/step) when driving a 50 Ohm load, or ±10V (20 mV/step) when driving a high impedance load.

Sample update rates are programmable from a low of 1.5 Hz to a high of 25 MHz (640 milliseconds to 40 nanoseconds) in 40 nanosecond steps. Up to 16,384 10-bit voltages may be programmed into the on-card memory.

The waveform may be of any length up to I 6,384 samples. The specified waveforms may be programmed to repeat from 1 to 255 times or continuously.

Breakpoints may be programmed in any non-consecutive memory locations to temporarily pause the output waveform until the ARB is retriggered by software or by an external hardware TTL trigger.

The memory locations are easily programmed by a string of numerical ASCII characters which directly represent the voltage output for each sample. An editing capability is provided to allow changing of individual points in the output waveform without requiring a complete reload of memory. In order to optimize waveform update speeds, memory loading has an auto-increment capability so that only the starting waveform memory location is programmed at the beginning of a block of waveform data.

Two auxiliary inputs included on the Card may be used to put the ARB under the control of an external clock (0 Hz to 25 MHz), and/or to trigger the waveforms from an external input.

Five LEDs provide Built-In-Test Equipment (“BITE”) for the ARB Card. These LEDs indicate run/halt status, external trigger enable, external clock enable, error status and breakpoint halt.

Number of Channels:

Waveform Resolution:
10 bits (1,024 points vertical resolution).

16K memory (from 2 to 16,384 horizontal samples).

Frequency Range:
1.4 Hz to 25 MHZ.

Programmable Sample Rates:
40 nsec to 671 msec in 40 nsec steps.

Output Impedance:
50 Ohm.

Output Amplitude:
±5V dc into a 50 Ohm load,
±10V dc into a high impedance.

Output Accuracy:
DC Accuracy, 0.5% of full scale (20.44V).
DC Temperature Drift. 0.02%/°C.
Settling Time (Full Scale). 120 nsec (to DC accuracy), 80 nsec (to 1.5% accuracy).

Output Current
100 mA maximum.

Offset Range:
±5V into 50 Ohms, ±10V into high impedance.

Output Limitation (AC plus DC):
±5V into 50 Ohms, ±10V into high impedance.

Waveform Triggering:
Software control or external TTL trigger.

External TTL Inputs:
External Clock. 0 Hz to 25 MHz.
External Trigger: minimum pulse width, 50 nsec active low.

Sync Output
TTL level pulse, active low during output of last waveform sample.

Time Base Accuracy:
±0.005% (0°C to 50°C).

Programmed By:
ASCII Characters.

I/O Connections:
SMB Snap-on Connectors.

Cable Supplied:
One 53A-729, 10 foot (SMB Snap-on to BNC Male).
Additional cables may be required