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p{ color: #000; } body{ background-color: #fff; font-size: 120%; font-family: verdana } img{ align: right; border: 0; } h1{ color: 7777ff; padding: 0; margin: 0; margin-bottom: 50px; } u.heading{ color: 7777ff; font-size: 110%; } a:link{ color: 7777ff; text-decoration: none; } a:hover{ color: aaa; text-decoration: none; } a:visited{ text-decoration: none; } td.pic{ padding-right: 20px; color: aaa; vertical-align: top; } td.text{ vertical-align: top; font-size: 120%; } a.anchor{ color: 7777ff; text-decoration: none; } a:hover.anchor{ color: aaa; text-decoration: none; } hr{ margin: 20px; } Click on picture for a larger image. Back to Top Guide Technology GT621 I/O Module time interval analyzer DESCRIPTION: This GT621 appears in good used condition. This card is the older version of Guide Technology's 600 series time interval analyzers. The card is actually two pieces, a Guide Technology GT601 mothercard, and a Guide Technology GT621 daughtercard. All traces, pins, connectors, and chips look fine. There is one modification on the back of the card - visible in the 9th picture down - where a wire was soldered to the mothercard. All BNC ports are in good condition and readily accept connectors. Here is the only info I could find on this series of time interval analyzer cards. It is for the newest version, the GT658. GuideTech's GT 658 PCI is an ultra-fast, high resolution, DC - 400 MHz Time Interval Analyzer (TIA), ideal for most PC-based lab bench (timing) test applications. What makes the GT 658 superior to traditional counters is analogous to the difference between volt meters & digital scopes. While both measure voltage, the scope provides much more information about the dynamics of the signal. This is because our patented TIA substantially increases measurement speed, and the measurements are displayed as a function of time. All of these features, along with the benefit of 'continuous time correlation to a common reference between all measurement time stamps,' enable our TIAs to make measurements that weren't previously possible with traditional counters. Product Benefits: Resolution, Accuracy, and Measurement Rate: Measurement table in figure 1 (see back) represents each channel. Therefore, both channels may operate alone or simultaneously. Multiple boards can be calibrated for an absolute accuracy of +1nS between channels on separate boards Interface to the PC: Memory can be read while measurements are taken, enabling continuous operation. Service Warranty: Full year, full service warranty for upgrades and/or repairs as needed. Time Res. -- Single Shot 75 pS Time Res. -- Averaged 2 pS Freq. Res. (Digits/S) Up to 10 Time Interval Accuracy (Channel A to B) +/- 0.5 nS Max. Meas. Rate (MSa/S) 3.5 *Specifications are subject to change without notice. SPECIFICATIONS: MAIN INPUT CHANNELS: No. of channels: 2 Frequency range: DC - 400 MHz Minimum pulse width: 1.5 nS Sensitivity: 50 m V rms (DC - 100 MHz) 100 m V rms (100 MHz - 200 MHz) 150 m V rms (200 MHz - 400 MHz) Input impedence: 1KΩ / 10 pF, or 50Ω software programmable Coupling: DC Threshold setting (each channel): Range: -5 V to + 8 V Resolution: 3.5 m V Absolute accuracy: 35 mV or 1% of setting Automatic threshold setting is available EXTERNAL CLOCK AND ARM INPUTS: Frequency Range External clock: 10 MHz (+/- 100 Hz) External arm: DC - 80 MHz Minimum pulse width: 6 nS Sensitivity: 50 mV rms Ω Input impedence: 1K (user may install additional resistor) TIMEBASE ACCURACY: Coupling: DC Threshold setting Range: - 5 V to + 5 V Resolution: 2.5 Mv Absolute accuracy: 35 mV or 1% of setting Automatic threshold setting available Temperature compensated crystal oscillator: Temp: 0 - 45 C +/- 10ppm Aging: <1 ppm / year EXTERNAL CONNECTIONS: Main Channels: 2, SMA External Clock: 1, SMA External Arm: 1, SMA Keep in mind that the above specifications are for the NEWEST version of this card, and may not be the same as the card for sale. Thanks for looking and let me know if you have any questions about the item, I will do my best to answer. The unit is sold untested but is guaranteed NON-DOA with a 7 day ROR. SHIPPING: We package items in a manner in which we would want them to be shipped to us: packed within shippers guidelines for insurance purposes (Sturdy cardboard boxes, bubble wrap, and packaging peanuts). We take packaging and shipping very seriously. We use ~70% recycled shipping materials, cutting down on your cost! PAYMENT: We accept PayPal, Money Orders, Cashiers Checks, Company Issued Checks, All major Credit Cards, Bank Wire transfers. Sorry, we do not accept personal checks. CO STATE RESIDENTS: All items won by Colorado residents will be subject to 6.7% sales tax. INTERNATIONAL BIDS: are welcome. Please email us as soon as possible (before the auction ends) for a shipping quote.
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