GX5960 Series

Description

The GX5960 digital subsystem represents the highest level of performance available for PXI-based digital instrumentation and features high performance pin electronics and a timing generator / sequencer in a compact, 6U PXI form factor. The GX5960 series consists of the GX5961 clock generator board with 16 driver / sensor channels and the GX5964 driver / sensor board which supports 32 bi-directional I/O channels. Up to 528 digital I/O channels can be supported by the GX5960 digital subsystem. Each digital channel features a wide drive / sense voltage range of -14 V to +26 V (maximum swing of 24 volts) which can be individually programmed for a drive hi, drive lo, sense hi, sense lo, and a load value (with commutation voltage level) – offering the user complete flexibility when creating test programs and fixtures for multiple UUTs. In addition, each channel offers a parametric measurement unit (PMU) for DC measurements.  

Features

The GX5960 offers real-time digital stimulus, record, or expect data modes on all I/O channels. Pattern memory depth is 256K words. Each channel can be configured as an input or output on a per cycle basis. Six drive data formats are supported: NR, R1, R0, RZ, RC, and Complement Surround – providing flexibility to create a variety of bus cycles and waveforms to test board and box level products.  

The GX5961 provides timing, input / output synchronization signals, and sequencing as well as 16 I/O channels. Additional channels can be added to the system by installing one or more, GX5964 boards which are interconnected via the PXI local and trigger busses. The GX5961 offers a flexible clock system which allows the module to operate as a timing master to the UUT or be slaved to the UUT’s time base or some other external clock.

All pin electronic resources are independent on a per channel basis – offering the user complete flexibility when programming drive / sense levels, source / sink currents, slew rate, skew, or PMU functions. The PMU can operate in the force voltage / measure current or force current / measure voltage mode and is useful for measuring a UUT’s DC characteristics. In addition, each I/O channel includes an analog bus relay, which allows each channel to support hybrid channel (digital or analog) measurement capabilities. For analog stimulus / response measurements, the analog bus can be connected to external resources via a dedicated analog bus connector located on the front panel of the module.

Data Sequencer

The GX5961's sequencer supports sequences up to 4096 steps and has 16 loop counters that may be nested.  The sequencer supports a variety of sequencing functions including jumps, subroutines, looping, and test inputs. All of the sequencer commands may be programmed using a Graphical Vector Editor, Windows® API commands, or via a script language. The sequencer allows the user to generate test vectors indefinitely at maximum test rates. Internal and external trigger and pause commands are available in several modes.

Timing Generator

The GX5961's timing generator supports 256 timing sets which can consist of up to 4 drive phases and 4 sense windows for 4K of sequence steps. The T0 cycle or sequencer period range is programmable from 20 ns to 64 us with the phase and window values programmable from 0 ns to 64 us. This flexibility offers the user the ability to address a wide range of applications including the emulation of complex bus cycles and proprietary digital interfaces.

Compatibility

The GX5960 subsystem  can operate in any 6U PXI chassis that supports an air flow rate of 20 cfm/slot. Power for the pin electronics requires the use of external power supplies or the GX5960 can be used with a Marvin Test Solutions GX7005A / GX7015A / GX7017 PXI chassis which are designed specifically for high performance / high power digital applications and includes the necessary pin electronics power supplies.

Software

The board is supplied with GtDio6x, a software package that includes vector editing, a virtual instrument panel, and 32/64-bit DLL driver libraries and documentation. The virtual panel can be used to interactively program and control the instrument from a window that displays the instrument’s current settings and status. In addition, interface files are provided to support access to programming tools and languages such as ATEasy, LabView, C/C++, Microsoft Visual Basic®, Delphi, and Pascal. On-Line help file and PDF User's Guide provides documentation that includes instructions for installing, using and programming the board.
Other optional software packages are available to support the importing of CASS digital TPS’ or IEEE-1445 .tap files.

Applications

• Automatic Test Equipment (ATE)
• High-speed functional digital test
• Vector capture
• Hybrid and digital device test
• Memory testing
• LRU and SRU test

The following screenshots show the various features and capabilities of GtDio6x virtual panel application used to control and display the GX5961/GX5964 boards settings:

Domain Setup and Configuration Page

The GX5960 boards can be grouped together to form a domain which can be addressed as one system using a domain handle to configure the domain and to load vectors:

Steps Page

The GX5960 domain Step list is displayed in the Steps page. Each Step can point to one or more vectors which can be edited from this page using the Edit Vectors button. Each Step has its own timing set that includes the Phase Assert/Return and Window Open/Close edges. The bottom area displays the sequencing command for the Step:

Vector Editor

The vector Editor is used to display and edit the domain channels patterns. After running the domain, the vector editor can display the recorded real-time compare errors (as shown here) or the response data:

Channels Page

The Channels page is used to set the channels dynamic I/O or PMU mode and their settings:

Measure Page

The Measure page is used to display various channel measurements such as voltages, currents, and temperatures:

GX5960 Series Specifications

Timing
Internal Test Clock or System Clock (T0_Clk)	15.625 KHz to 50 MHz (using the 500 MHz master clock)
Test Clock Timebase	External reference clock: 1 MHz to 80 MHz Internal reference clock: 20 MHz
T0_CLK Timing Resolution	2 ns (using the 500 MHz master clock)
Master Clock (Phase and Window Timing Source)	500 MHz (internal oscillator), ±50 ppm 40 KHz to 500 MHz (PLL), ±50 ppm
Master Clock Reference	Internal: 20 MHz PXI Clock: 10 MHz Front panel: 5 MHz to 80 MHz
Timing Set	256 Timing Sets with 4 Phases, 4 Windows, and 4 K sequence steps
Phase Programming Range (Assert / Return)	0 ns to 64 us (using the 500 MHz master clock)
Window Programming Range (Open / Close)	0 ns to 64 us (using the 500 MHz master clock)
Phase and Window Timing Resolution	1 ns, using the 500 MHz master clock
Minimum Phase / Window Pulse Width; Assert / Return or Open  / Close	8 ns, using the 500 MHz master clock
Phase / Window Reference	Phase: System or Vector Clock (selectable per Seq Step) Window: Vector clock only
Phase / Window Dead Time	10 ns at end of the Vector period (using 500 MHz master clock)
Clocks per vector	1 to 256 (selectable per Sequencer Step)
Pause / Vector Clutch	Phase and Window are frozen when Pause is asserted Pause on external event Pause based on phase edge Resume after programmed delay Resume  on an external signal or CPU resume
Halt / System Clutch	Halt based on an external signal Halt on error Halt on a Sync pulse (used as a breakpoint)
Pause / Pattern and Halt / System  Clutch Sources	PXI trigger lines Aux I/O 1-12 Ch. 1-32 (with mask/expect) , (GX5964/GX5964A) Ch. 1-16 (with mask / expect), (GX5961) Phase 1-4 (for Pause)
Drive / Sense Modes And Channel I/O Specifications
(Specfied Drive / Sense specifications based on pin electronic voltage rails (VCC & VEE) of +18 V and -14 V)
Number of I/O Channels (Single-Ended)	16 per card (GX5961) 32 per card (GX5964/GX5964A)
Test Modes	Dynamic or Static
Data Output Formats (Per Channel)	Drive Hi, Drive Lo, Hi-Z Formatted Data: No return, Return to 1, Return to 0, Return to Hi-Z, Return to complement, Surround by complement; selectable on a per channel basis
Drive Data Timing (Per Channel)	Data assert / de-assert based on Phases 1 - 4
Capture Modes (Per Channel)	Mask Opening edge of Window Closing edge of Window Window - data is valid for entire window duration
Drive / Expect Mode	Output: Drive Hi, Drive Lo, Hi-Z Expect: 1, 0, OK, between states, or mask Keep last Toggle last Accumulate CRC-16
Number of Drive and Sense Voltage References	GX5961: 16 Drive Hi / Drive Lo 16 Sense Hi / Sense Lo GX5964/GX5964A: 32 Drive Hi / Drive Lo 32 Sense Hi / Sense Lo
Drive Voltage Range	-14 V to +26 V, Drive Hi & Drive Lo, maximum swing is 24 V
Drive Voltage Level for specified Vcc, Vee	Drive Hi: -9 V to +15 V Drive Lo:  -10 V to +11 V
Drive High Range	Vee + 5V to Vcc - 3V
Drive Low Range	Vee + 4V to Vcc - 7V
Drive Voltage Level Range	0.5 VPP (min) 24 VPP (max)
Drive Voltage Accuracy	±50 mV, < 24 VPP driver voltage
Drive Voltage Resolution	16 bits
Output Impedance	12Ω or 50 Ω (typ)
Drive Current	200 mA per channel 1.6 A per board, max (GX5964 / GX5964A) 0.8 A per board, max (GX5961)
Programmable Driver Over-Current Protection	±25 mA range, ±6 mA accuracy ±200 mA range, ±40 mA accuracy Over current condition will tri-state driver on a per channel basis
Slew Rate	0.1 V/ns to 1 V/ns, adjustable, programmable on a per channel basis
Channel Skew	320 ps, typical 500 ps max, after calibration for all channels (single board) (Drive and Sense)
Channel De-Skew	Range: ± 5 ns Resolution: 312.5 ps Programmable on a per channel basis Separate deskew control for drive and sense
Maximum Sense Voltage Range	-16 V to +22 V, Sense Hi & Sense Lo
Sense Range Relative to Voltage Rails	Vee + 2V to Vcc - 7V
Sense Voltage Range, for specified Vcc, Vee	Sense Hi: -10 V to +11 V Sense Lo: -10 V to +11 V
Sense Voltage Threshold Accuracy	±50 mV, < 24 Vp-p sense voltage
Sense Voltage Resolution	16 bits
Input Leakage Current	50 nA (max)
Pull-up, Pull-down Current Source / Sink	24 mA, programmable on a per channel basis -24 mA, programmable on a per channel basis V commutate: -10 V to +11 V, programmable on a per channel basis
Pull-up / Pull-down Current Source Source / Sink Accuacy	240 uA
Pull-up / Pull-down Current Source Source / Sink Resolution	16 bits
Voltage Commutation Accuracy	±50 mV, < 25 V range
Voltage Commutation Resolution	16 bits
Resistive Load	Range: Hi-Z, 250 Ω, 1 KΩ, programmable on a per channel basis
Vector Memory	256 K words per channel
Sequencer
Commands	Jump, Conditional Jump, Loop, Call Subroutine, Return, Pause, Halt
Loop Counters	16, can be nested Only one can end on a sequence step Loop count range: 1 – 64 K or continuous
Test Inputs	External: PXI triggers, Aux I/O Internal: Data sense, Edge or level
Sequencer Memory	4,096 Steps

GX5961 Timing Generator Board External Timing, Control and Status Signals
Sync Outputs	2; SyncPulse0, SyncPulse1
General Purpose Aux I/O	12
Input Aux I/O Selections	Seq Clock, Break (System Clutch), Halt (Pattern Clutch), Sequence Jump, Sequence Jump 1 - 4 signals
Output Aux I/O Selections	Phase, Window, Waveform, Syncs, Seq flag, Seq Active, Seq Idle, Burst Active, T0_Clock , Record Active, PXI 10MHz Clk,  misc sequencer status  signals
Aux 1 -4 I/O	Programmable; sense Hi, sense Lo, drive Hi, drive Lo; Sense level range: Vee +2V to Vcc – 7V Drive high range: Vee +5V to Vcc – 3 Drive low range: Vee +4V to Vcc – 7V
Aux 5 – 8 I/O	LVTTL compatible
Aux 9 – 12 I/O	ECL compatible; two differential channels
Probe	Ground, Probe Button, Probe LED, Monitor
Parametric Measurement Unit (PMU)
Number of PMUs	32, one per channel (GX5964/GX5964A) 16, one per channel (GX5961)
Modes	Force voltage, measure current Force current, measure voltage
Force Voltage Range (for specified Vcc and Vee operating voltages	-10 V to +15 V
Maximum Force Voltage Range	Vee + 4 V to Vcc - 3V
Force Voltage Accuracy	± 50 mV, 25 volt range
Force Voltage and Current Resolution	16 bits
Force Current Range	±25 mA FS ±200 mA FS
Force Current Accuracy	±50 uA, 25 mA range ±2 mA, 200 mA range
Measure Voltage Range (for specified Vcc and Vee operating voltages	-13 V to +15 V
Maximum Measure Voltage Range	Vee + 1V to Vcc - 3V
Measure Voltage and Current Resolution	16 bits
Measure Voltage Accuracy	±50 mV, -9 to +13 volt range
Measure Current Range	±25 mA FS ±200 mA FS
Measure Current Accuracy	±50 uA, (25 mA range) ±2 mA, (200 mA range)
Analog Measurement Bus
Number of Analog I/O Channels	16 per card (GX5961) 32 per card (GX5964 / GX5964A)
Control	Independent connect / disconnect to each I/O channel
Switching Current	Maximum Current: 0.5 A per channel
Operating Voltage	30 volts, max

High Voltage I/O (GX5961 Only)
Channels	32 I/O channels
Output Configuration	Open collector
Maximum Voltage	28 VDC
Maximum Current	500 mA per output, 1 A max per byte
Driver Off-State Input Current	65 uA, typical
Measurement Threshold Voltage Range	0 to +28 VDC , threshold level common to all channels
Threshold Resolution	5 mV
Threshold Accuracy	+/- 35mV + 1% of programmed value
Connections (GX5961, GX5964 and GX5964A)
I/O	GX5961: 68 position SCSI III Type GX5964: 68 position SCSI III Type GX5964A: (2) 34 pin, dual row IDC connectors
Analog Bus (for connections to analog instrumentation)	GX5961: 68 position SCSI III Type GX5964: 68 position SCSI III Type GX5964A: 68 position SCSI III Type
External Control , Timing (GX5961 only)	68 position SCSI III Type
High Voltage I/O (GX5961 only)	68 position SCSI III Type
Diagnostic Probe (GX5961 only)	Probe signal: BNC Probe button / LED: RJ45
External VCC / VEE	9 position sub-D, male +18 V @ 6 A (GX5964 / GX5964A) +18 V @ 3 A (GX5961) -14 V @ 6 A (GX5964 / GX5964A) -14 V @ 3 A (GX5961)
Vcc range	+10V to +29V
Vee range	-18V to -3V
Vcc  - Vee range	+13V (min) to +32 V (max
Environmental
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +70 °C
Vibration	5 g @ 500 Hz
Shock	10 g for 6 ms ½ sine
Physical Dimensions
Size	6U PXI, single slot
Weight	1.2 lbs (520 g)
Calibration
Calibration Interval	1 year

Note: Specifications are subject to change without notice.

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