This is the specification of the X34 logic analyzer module. Additional technical information is presented in the FAQ section.
The X34 can be configured as a logic analyzer or as a frequency and event counter. It has 32 signal inputs, two clock inputs, a Trigger In connection, a Trigger Out connection, and ground connections.
Logic Analyzer
In logic analyzer mode the X34 operates at up to 500MHz, 32 bits wide, with Timing (Asynchronous) or State (Synchronous) sampling. Transition sampling is supported for both sampling modes. Transition sampling only records data when the inputs change. Slowly changing signals can be sampled at high speed (with corresponding enhanced accuracy) over long periods without running out of acquisition memory space.
Timing (Asynchronous) Sampling
For Timing sampling the sampling clock is supplied by the X34. All 32 probes can be assigned as signal inputs. The Clock inputs are not used. Separate probes are Trigger In and Trigger Out.
State (Synchronous) Sampling
For State sampling, up to two sampling clocks are supplied by the circuit being tested. The X34 captures data at the edges of the incoming clock(s). It can be set to respond to rising edges, falling edges, or both edges. All 32 probes can be assigned as signal inputs. Two probes are Clock Inputs. Separate probes are Trigger In and Trigger Out.
Acquisition Logic
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Timing Sample Rate 500MHz maximum, 100Hz minimum. Both of the common timing sequences are supported - the 5-2-1 sequence of frequencies (for instance 500MHz, 200MHz, 100MHz) and the 1-2-4 sequence of times (for instance 10ns, 20ns, 40ns) |
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State Sample Rate 0 to 200MHz |
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Acquisition Memory Depth 6K slots. Transition sampling compresses repeated samples by up to one million samples per acquisition memory slot. See also the Sample Compression entry in the technical FAQ. |
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Threshold 0.8V to 2.5V, in steps of 0.1V |
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Minimum Input 0.5V below threshold for Lo, 0.5V above threshold for Hi |
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Trigger Connections Trigger In and Trigger Out. |
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Input Skew less than 2ns, channel to channel |
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Input Impedance 100Kohms in parallel with 10pF |
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Maximum Input Voltages +/-40V DC, +/-15V AC |
Triggering
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Conditions 0, 1, Rising Edge, Falling Edge, Either Edge, and DON'T CARE for all channels |
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Pattern Recognisers 2 |
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Edges Trigger on the condition becoming TRUE or on the condition becoming FALSE |
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Pass Count 0 to 1023 |
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Trigger Logic Multi-state trigger logic with Edge, Pattern, and Complex triggering. Complex triggering includes occurrence counting and minimum and maximum duration measurement |
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Trigger Position 10% to 90% of acquisition memory, in 10% steps |
Frequency and Event Counter
In Frequency Measurement mode the X34 counts frequencies or events simultaneously on all 32 signal inputs at frequencies up to 500MHz. There are 64-bit event counters on all channels.
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Channels 32 |
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Channel Thresholds The same variable threshold as for the logic analyzer function |
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Frequency Range 500MHz down to less than 0.01Hz |
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Digits 19 (64 bits) |
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Accuracy +/-0.01% |
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Frequency Measuring Method Direct and Reciprocal Counting |
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Internal Gate Time 100ms, 1s, 10s, or infinite |
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External Gating for Event Counting Optionally gated (enabled) by a pattern match on any or all of the lower 8 logic analyzer channels |
Environmental
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Operating Temperature 5°C to 40°C |
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Storage Temperature -40°C to 75°C |
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Size 72 mm x 45mm x 17mm (2.8" x 1.8" x 0.7") |
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Power Consumption 2.3W maximum |
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Power Source Via USB cable. No external power supply |
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Computer Connection USB connection to computer. A detachable USB cable is included. |
Software Features
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Host Computer Logic Analyzer front panel software included for Windows 98/ME/2000/XP |
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Print Waveforms Yes |
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Data Output Text File and CSV File |
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Cursors 1 main cursor plus 1 auxiliary cursor |
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User-Level Programming Library Yes |