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Publication No. 980956 Rev. A 346B User Manual

Astronics Test Systems

Operation 2-7

Sweep Input and Sweep UP-DN

The sweep input is a BNC connector on the rear panel. Input a square wave signal
with a level of 0 to 5 Volts at a frequency ten times the desired linear sweep rate.
The UP/DN terminal when at low level (0 Volt) causes the frequency to sweep
down and when at +5 Volt to sweep up.

The SWEEP UP can be activated by pressing the

and then

key. (There must be an input signal at the Sweep input jack on the rear panel).

Press the key

and it will sweep down. The

and

keys are used to

change the sweep direction. Press

and it stops the sweep.

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Содержание Trig-Tek 346B

Страница 1: ...uy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing R...

Страница 2: ...8 949 859 8999 Fax 949 859 7139 atsinfo astronics com atssales astronics com atshelpdesk astronics com http www astronicstestsystems com Copyright 2011 by Astronics Test Systems Inc Printed in the Uni...

Страница 3: ...tion s of any product or part without Astronics Test Systems express written consent or misuse of any product or part The warranty also does not apply to fuses software non rechargeable batteries dama...

Страница 4: ...y procurement of products from Astronics Test Systems TRADEMARKS AND SERVICE MARKS All trademarks and service marks used in this document are the property of their respective owners Racal Instruments...

Страница 5: ...n cord or a three prong two prong adapter This will defeat the protective feature of the third conductor in the power cord Maintenance and calibration procedures sometimes call for operation of the un...

Страница 6: ...2 1 Operation 2 1 Programming Functions 2 1 Operation 2 2 Grounds 2 2 Frequency Set Up 2 3 Level Set Up 2 4 Units and Modes 2 4 Programmable Files 2 4 Segment Programming 2 4 Remote 2 5 Save File 2 6...

Страница 7: ...ii Astronics Test Systems Chapter 4 4 1 Calibration Procedure 4 1 Test Equipment 4 1 Procedure 4 1 PC Output 4 2 Distortion 4 3 Chapter 5 5 1 Trouble Shooting 5 1 Power Supply 5 1 Front Panel Keypad...

Страница 8: ...Systems iii List of Figures Figure 1 1 346B Synthesized Calibrator 1 1 Figure 2 1 Front Panel Keypad 2 2 Figure 2 2 Rear Panel Terminal Strip and BNCs 2 3 Figure 2 3 346B Layout 2 15 Figure 4 1 115 2...

Страница 9: ...346B User Manual Publication No 980956 Rev A iv Astronics Test Systems List of Tables Table 3 1 Programming Functions 2 1...

Страница 10: ...Publication No 980956 Rev A 346B User Manual Astronics Test Systems v DOCUMENT CHANGE HISTORY Revision Date Description of Change A 05 18 2011 Document Control release...

Страница 11: ...346B User Manual Publication No 980956 Rev A vi Astronics Test Systems This page was left intentionally blank...

Страница 12: ...remote bus Frequency accuracy is 2 parts in 100 000 and the level accuracy is 0 5 of set level 0 2 of full scale Figure 1 1 346B Synthesized Calibrator The unit has non volatile memory capacity to hol...

Страница 13: ...req Range 0 1 Hz 99999 9 Hz Distortion 5 Hz to 10 000 Hz 5 Hz to 5000 Hz 0 25 5000 to 10 000 Hz 0 5 10 000 to 99999 9 Hz 1 Accuracy Freq Set 20 ppm 0 to 70 C Level Set Accuracy 0 5 of settings 0 2 FS...

Страница 14: ...DC Output Millivolt plus minus Impedance Less than 10 ohms Level 9 999 99 99 999 9 or 9999 mV DC full scale Level Set Accuracy 0 5 of setting 0 2 FS Resolution 9999 mV Range 1 mV 999 9 mV Range 1 mV...

Страница 15: ...Applies power to circuit when ON Keypad Frequency Selector Six digit selection by keypad for 0 1Hz resolution Level Selector Four digits 0 010 9999 settings of level Control Selects RMS Peak pk pk or...

Страница 16: ...blication No 980956 Rev A 346B User Manual Astronics Test Systems Introduction 1 5 Dimensions 3 5 high 19 wide 13 deep Power Operates either 115 or 230 V RMS AC power 50 400 Hz at approximately 25 wat...

Страница 17: ...346B User Manual Publication No 980956 Rev A Introduction 1 6 Astronics Test Systems This page was left intentionally blank...

Страница 18: ...Publication No 980956 Rev A 346B User Manual Astronics Test Systems Operation 2 1 Chapter 2 Operation Programming Functions Table 3 1 Programming Functions...

Страница 19: ...front panel keypad Figure 2 1 Turn the unit on by placing the power switch to ON position Figure 2 1 Front Panel Keypad Grounds There are two grounds on the terminal strip on the back panel of the uni...

Страница 20: ...cimal point since the decimal point is always on the same location 0 1 Hz resolution For example to set the frequency for 250 0 Hz press the following keys After the key is pressed the PROG light will...

Страница 21: ...re DC DC Sine Wave RMS Sine Wave Peak Sine Wave pk pk Square Wave pk pk and Triangular Wave pk pk Simply press MODE UNITS and step through the seven different options and observe the unit and mode LED...

Страница 22: ...all of the 31 different segments have been programmed the operator can cause the 346B to step through each segment and dwell at each segment for the preset time duration This can be done either throu...

Страница 23: ...ay it indicates a file with that file number already exists If you press it will replace the old file with the new file if you press another key it will not save the file To recall a file press and th...

Страница 24: ...ts at a frequency ten times the desired linear sweep rate The UP DN terminal when at low level 0 Volt causes the frequency to sweep down and when at 5 Volt to sweep up The SWEEP UP can be activated by...

Страница 25: ...equence ST2 Start the stepping sequence ST3 Start Sweep Up ST4 Start Sweep Down ST5 Stop the Sweep SA SG xx Save under segment number xx 01 to 31 RC SG xx Recall Segment xx 01 to 31 SA FI xx Save unde...

Страница 26: ...Speed 4800 bps Position 2 ON Even parity 7 character 1 stop bit OFF Odd parity 7 character 1 stop bit Position 3 ON Echo ON OFF Echo OFF Position 4 Not Used S2 Switch Not Used Input strings received...

Страница 27: ...C SG 20 This will bring up the parameters on segment number 20 To save all 31 segments under a file number use the command SA FI 55 This will save all the segments under File number 55 To recall a fil...

Страница 28: ...tus of more than one segment is needed just list them continuously one after the other For example to receive status of segments 4 12 and 21 use the command OT SG04 SG 12 SG21 The received information...

Страница 29: ...T1 Start the sweeping sequence ST2 Stop the sweep sequence ST3 Start Sweep Up ST4 Start Sweep Down ST5 Stop the Sweep SA SG xx Save under segment number xx 01 to 31 RC SG xx Recall Segment xx 01 to 31...

Страница 30: ...ample to set the frequency for 500 6 Hz Level for 20 8 millivolts rms sinewave Mode 2 and dwell time of 5 seconds use the following commands FR 500 6 LE20 8 MD 2 T 5 Once all the parameters for a segm...

Страница 31: ...ffer The received information would look like the following FR 02000 0 LE 10 00 MD 2 This indicates a sinewave of 2000 0 Hz at 10 00 millivolts RMS To receive status on Segment 8 use the following com...

Страница 32: ...ed spacers on component side of PC Board near transformers Retain hardware Refer to Figure 2 3 3 Slide Interface Board Assembly TT 3869 into connector shell on rear panel Engage PI P2 headers into Hi...

Страница 33: ...346B User Manual Publication No 980956 Rev A Operation 2 16 Astronics Test Systems This page was left intentionally blank...

Страница 34: ...ed 1 Digital Multimeter Fluke 45 or equivalent True RMS 2 Frequency Counter Leader LCD 822 or equivalent 3 Oscilloscope Tektronix 922 4 Distortion Analyzer Hewlett Packard 334A Test Set Up A program f...

Страница 35: ...n the AC voltmeter 11 Select segment 7 Observe SIN RMS 99 999 9 Hz 9999 mV with an indication of 99 999 9 2 0 Hz on the frequency counter and 9999 120 mV rms indication on the AC voltmeter 12 Select s...

Страница 36: ...Hz 25 max 50 kHz 5 max 100 kHz 1 0 max File 99 Performance Test Program SEGMENT FREQUENCY MODE LEVEL UNITS TIME NOTES 01 00346 2 SIN XXX 0 RMS 5 IS SEG XXX IS THE SERTIAL NO 2 DC 9999 DC 5 SEG 2 5 SEG...

Страница 37: ...346B User Manual Publication No 980956 Rev A Performance Test Procedure 3 4 Astronics Test Systems This page was left intentionally blank...

Страница 38: ...cover removed Test Equipment Note Equivalent equipment can be substituted Digital Multimeter Keithley 191 Voltage to Charge Converter Trig Tek 2030 Charge Amplifier Trig Tek 203M Distortion Analyzer H...

Страница 39: ...om the mV OUTPUT This procedure provides a means of checking the pC OUTPUT The method used is to compare the voltage to picocoulomb converter at the pC OUTPUT with a known converter the 2030 Voltage t...

Страница 40: ...on on the charge amplifier should be between 995 and 1005 for each output front and rear panel Distortion 1 Connect the Distortion analyzer input to the calibrator mV OUTPUT 2 Select the SIN RMS mode...

Страница 41: ...346B User Manual Publication No 980956 Rev A Calibration Procedure 4 4 Astronics Test Systems This page was left intentionally blank...

Страница 42: ...r Supply The Power Supply Section of the unit is located on the right side of the mother board The transformer marked T1 provides the 18 and 18 Volts and transformer T2 provides the 5 and 5 Volts Chec...

Страница 43: ...sed each of the 6 digits should have a number in it 2 The problem could be with any of the 5 counters marked U21 U25 Replace one at a time to fix the problem 3 The problem could also be caused by the...

Страница 44: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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