353Measure Mode and Display Selection Effects on Measurement Time

Selection of TRIGGERED results in a measurement rate the same as CONTINUOUS. Measure Mode CONTINUOUS. Selection of CONTINUOUS results in a measurement rate discussed in paragraph 3.5.2 above. CONTINUOUS is also the power-up default mode. Notice that in continuous mode, the measurement being made when the DUT is connected to the Digibridge is erroneous. Display Selection. The selection of BIN NO. display cuts 6 to 10 ms from the measurement time, compared to the other...

Table

REMOTE TEST FIXTURE CONNECTIONS VIA BNC CABLE Bias BNC Connector Color Code on Polarity at Digibridge 1689-9602 Cable Connection at 1689-9600 -9605 Test Fixture * * Left and right are defined with the fixture oriented for reading the legend. d. For the 1689-9605 remote test fixture -in order to activate the Start bar and the GO NO-GO lights connect the 1689-2400 Remote Tester Cable (supplied with the fixture) as follows. Connect one end to the HANDLER INTERFACE connector behind the instrument....

Autoranging Measurement Ranges And Source Resistances

1 97.4 kohms mid 102 K mid 1600 pF f max 25 . 6 K 6.4 kohms mid 6.4 K mi n 1.6 K mi n 6.4 nF f mid 25.3 nF f max 100. nF f max 4100 mH f mid 1025 mH f min 256 mH f max 1600 ohms min 100 nF f mid 400 ohms mid 400 nF f min 100 ohms max 1600 nF f max 256 iriH f mid 64 mH f min 16 rrH f max 100 ohms min 1.6 uF f mid 25 ohms mid 6.4 uF f min .00001 ohm max 99999 mF max 16 mH f mid 4 mH f min .00001 mH * Selection of EXTERNAL BIAS makes Rs 25 ohms on all ranges see paragraph 3.7.2. ** K is kilohms 'M...

36 Accuracy The Limits Of Errors 361 General

Refer to the Specifications, at the front of this manual. The specifications apply at an ambient temperature of 23 degrees C (unless recalibration has been done at some other temperature), in low humidity, if the OPEN and SHORT zeroing procedures have been executed properly (paragraph 3.1). These specifications are valid when autoranging is used or the optimum range is set and held. When a non-optimum range is set and held, the accuracy may decrease (see paragraph 3.6.4). Typical accuracy is...

Mechanical Dimensions

(Wx H x D) 14.8 x 4.4 x 13.5 (375 x 112 x 343 nm) Weight 13 lbs. (5.9 kg) net, 18 lbs. (8.2 kg) shipping QuadTech warrants that Products are free from defects in material and workmanship and, when properly used, will perform in accordance with QuadTech's applicable published specifications. If within one (1) year after original shipment it is found not to meet this standard, it will be repaired, or at the option of QuadTech, replaced at no charge when returned to a QuadTech service facility....

352 Measure Rate Selection at Keyboard

Choose one of 3 basic measurement rates with the MEASURE RATE key SLOW, MEDIUM, or FAST. The measurement rates (continuous or triggered) are respectively about 2, 4, and 8 measurements per second, if the other test conditions are left at normal power-up defaults. The tradeoff is speed vs. accuracy. The Digibridge will make a more precise and accurate measurement at a slower rate. For the above conditions, in very simplified terms, the basic accuracy is 0.1 , and the tradeoff is as follows SLOW...

13controls Indicators And Connectors

Figure 1-1 shows the controls and indicators on the front of the 1659 instrument. Table 1-1 identifies them with descriptions and functions. Similarly, Figure 1-2 shows the controls and connectors on the rear of the 1659 and Table 1-2 identifies them. Figure 1-1. Front controls and displays. Upper illustration 1659 RLC Digibridge . Lower illustration keyboard detail. Figure 1-1. Front controls and displays. Upper illustration 1659 RLC Digibridge . Lower illustration keyboard detail.

35 Measurement Time And Measurement Ranges 351 General

Selection of MEASURE RATE (SLOW, MEDIUM, and FAST) obviously relates to measurement time, providing the user with an easily made choice. (The slower rates provide greater accuracy.) In this paragraph, the many items that affect measurement time are explained. The measurement time (required to complete a measurement and display the results) depends not only on the selected measure rate, but also on the test conditions, choice of display, whether data is being sent out to other devices, etc. The...

RANGES and Range Changing

Descriptions of ranges, range extensions, and decimal point control are explained below. Basic Ranges. The 4 basic ranges are numbered 1, 2, 3, 4, in order of decreasing impedance. Each basic range is approximately a factor of 16 wide. Refer to paragraph 3.4.2 for a table of ranges. The word upper as used below refers to increasing measured value (which is the direction of increasing range number only if the principal measured parameter is capacitance). Similarly, the word lower as used below...

282 Interface Functions Figure

The following functions are implemented. Refer to the Standard for an explanation of the function subsets, represented by the identifications below. For example, T5 represents the most complete set of talker capabilities, whereas PPO means the absence of a capability. T5, talker (full capability, serial poll) SR1, request by device for service from controller RL2, remote control (no local lockout, no return-to-Iocal switch) DT1, device trigger (typically starts measurement) C0, no controller...

271 Interface via IEEE488 Bus Handler Interface Option 16589620

If you have the 1658-9620 interface option, connect from the HANDLER INTERFACE on the rear panel to a handler, printer, or other suitable peripheral equipment as follows. (The presence of the 24-pin connectors shown in Figure 1-3 verifies that you have one of the interface options). Refer to Table 1-2 for the appropriate connector to use in making a cable. Refer to Table 2-1 for the key to signal names, functions, and pin numbers. Connect the bin control lines to the handler. See Table 2-1....

Front Controls And Indicators

Digital display. 5 numerals with dec imal points and negative s i gn (-) when appli cable Display of principal measured value, function is MEASURE and display selection is VALUE, number indicates R, L, or C. If display selection is BIN No., indicates bin assignment of measured DUT. If function is ENTER, displays are indications of programmed entries, or status in calibration sequences. 2 Units and mu 11 i p 1 i e r s Digital display, 4 numerals with dec imal points and negative s i gn (-) when...

Page iv Table of Contents Parts Lists and Diagrams Section

Power supply assembly, board layout and schematic (pages 6-13 & 6-14) replaced by Power supply assembly part number 700011. Page ix -Specifications (Environment, Power Requirements & Weight) Power should be 90 -250Vac, 50 -60 Hz. Voltage switching is automatic and no longer selected by rear panel switch. 60 watts maximum. Weight should be 10 lbs. (4.5 kg) net, 15 lbs. (6.8 kg) shipping. Environment reads, Altitude < 2000m, Installation Category 1, Pollution Degree 1 Page 1-2 -Paragraph...

381 Introduction to Binning Sorting Based on Limit Comparisons

If a group of similar DUTs are to be measured, it is often convenient to use the limit-comparison capability of the Digibridge to categorize the parts. This can be done in lieu of or in addition to recording the measured value of each part. For example, the instrument can be used to sort a group of nominally 2.2-uF capacitors into bins of 2 ,5 , 10 ,20 , lossy rejects, and other rejects. Or it can assign DUTs to bins of (for example) a 5 series such as 1.8, 2.0,2.2,2.4,2.7 uF, etc. The bin...

327 The Effects of Cable and Fixture Capacitances

It is important to use very low-capacitance shielded wire for cables, not only for accuracy, but also to minimize resonance effects in the measurement of large inductance at high frequency. The Capacitances that are Most Liable to Affect Accuracy. Any test fixture extension cable adds a bit of capacitance in parallel with the DUT (because shielding of the leads is imperfect) and more between each terminal and ground. The zeroing process (paragraph 3.1.3) will compensate fully for the...

324 The 16899600 or 9605 Remote Test Fixture with 9802 BNC Cable Figure

Connection of the DUT at a remote test fixture normally requires Remote Test Fixture 1689-9600, 1689-9605, or equivalent special fixture. BNC Cable Assembly 1689-9602 (cable, 4 BNC to 4 BNC) BNC Adaptor 1689-9601 (connects 1659 built-in test fixture into 4 BNC connectors) This remote test fixture functions like the one supplied on the 1659 Digibridge. True Kelvin connections are made at the points of contact with the DUT leads. The recommended cable should be used (rather than any randomly...

331 Parameters Rq Lq Cd

The Digibridge as powered up provides you with automatic selection of parameters (unless keyboard has been locked with a particular parameter selected). This feature enables you to measure any passive component (without knowing whether it is essentially a resistor, inductor, or capacitor). It is provided at power-up and remains enabled as long as you do NOT select any Automatic parameter selection can be disabled by pressing any of the three parameter keys R Q, L Q, or C D....

23 Powerline Connectionfigure

The power transformer primary windings can be switched, by means of the line voltage switch on the rear panel, to accommodate ac line voltages in either of 2 ranges, as labeled, at a frequency of 50 or 60 Hz, nominal. Making sure that the power cord is disconnected, use a small screwdriver to set this switch to match the measured voltage of your power line. If your line voltage is in the lower range, connect the 3-wire power cable (PIN 4200-0300) to the power connector on the rear panel (Figure...

356 Time Required if IEEE488 Output is Enabled Figure

If data output is enabled, via IEEE-488 bus, additional time -about 2 ms to 12 ms is required per measurement. This time requirement depends on the selected display and what data is being sent out, approximately as follows. (Refer to explanation of operation with the IEEE-488 interface, paragraph 3.11.) Figure 3-8. Summary of the components of measurement time. Figure 3-8. Summary of the components of measurement time. Refer to Figure 3-8 for a summary of the segments of measurement time used...

Tub 22 IEEE488 Interface Key

Low state 'da ta Dl Ol, DlOS 1 ines Low state at least 1 listener on the bus is not ready For dala, Low statt at least 1 listener on the bus is not done accepting data Attention, specifies I of 2 uses for the DlOl 1)108 lines, as foil ows Low s la te controller conmand messages. Hi h statt data bytes fr m the talk.el device. Interface cltar. Low slate returns p-OrtiOn. of interface system to a known quiescent state. Service request. Low a talker or listener signals (to the controller) need for...

Table of Contents continued

3.12 Sample IEEE Programs 3-50 5.8 Ac curacy Ve r i f i ca t i on 5-30 3.12.1 Programming Hints 3-50 5.8.1 General 5-30 3.12.2 Hewlett Packard HP85 3-50 5.8.2 Capacitance Meas-Sm Med C 5-31 3.12.3 Capital Equip'mt .PC-488 3-50 5.8.3 Capacitance Meas-Lg.C,Rng4 5-34 3.12.4 Nat'l Instru'mts GPIB-PCII 3-51 5.8 . 4 Resistance Meas .Accuracy. .5-36 3.13 Self Checks & Failure Displays 3-51 5.8.5 Inductance Meas Accuracy. .5-37 3.13.1 Power-Up Self Check 3-51 5.8.6 D-Measurement Accuracy. . .5-39...

RLC and Dq Ranges

The table below gives the overal display ranges for the two quantities measured at the same time. The table below gives the overal display ranges for the two quantities measured at the same time. Measurement range is automatically set by the unit for best accuracy and resolution. Automatic ranging can be inhibited by the keyboard's RANGE HOLD key. The table below gives the RLC and DQ accuracy for measurements made at the SLOW rate. The RLC accuracy given is valid when the phase angle of the...

314 Routine Measurement

Verify or select measurement conditions as follows indicated by keyboard lights press the adjacent key to change a selection. Function MEASURE FUNCTION key , a necessary selection Display VALUE DISPLAY key , for normal RLC QD results Measure rate SLOW MEASURE RATE key , for best accuracy Measure mode TRIGGERED MODE key , optional Equivalent circuit SERIES EQUIVALENT CIRCUIT key -see paragraph 3.3. If you are in doubt about how to connect the device to be tested with the Digibridge, refer to...

Page 518 Instrument Cleaning Instructions

Monthly more or less depending on usage the built-in test fixture should be cleaned with a soft brush and isopropyl alcohol. Avoid getting excess alcohol on instrument paint surfaces, otherwise damage to the finish can result. For additional instrument cleaning instructions refer to paragraph 5.6.1 Care of the Test Fixture and paragraph 5.6.3 Care of the Display Panel . Page 5-19 -Paragraph 5.6.2, Cleaning the Air Filter Delete paragraph, air filter has been removed. Page 5-27 -Paragraph 5.7.4,...

Before operating the instrument inspect the power inlet module on the rear of the unit to ensure that the properly

The 1659 is shipped with a standard U.S. power cord, QuadTech PN 4200-0300 with Belden SPH-386 socket or equivalent, and 3 wire plug conforming to IEC 320 or an approved international cord set. Make sure the instrument is only used with these or other approved international cord sets, which ensures the instrument is provided with connection to protective earth ground. Instruction Manual Changes continued In all installations the instrument should be positioned with consideration for ample air...