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WAVECREST Corporation                                                                               

DTS-2077 Calibration Procedure

(17 April,  1998)

7

(7-5)

Scroll to TT+ and press FUNC.  The TT+ and TT- measurements for both input channels
are now set for 10%-90% trigger levels and should read between 1400 psec and 1500
psec.

Note:

When selecting Channel 2 in step (7-5), it will be necessary to press FUNC to
perform a pulse find measurement on Channel 2 to get the proper results.

8.0

Arming and Gating Checks

(8-1)

Connect CAL2 to the ARM1 input channel.  Connect CAL1 to the delay line and the
delay line to the CH1 input channel.

(8-2)

At Menu #1, select PERIOD, CH1, TRIG = 50%-50%.  Select AUTO ARM and
CONTINUOUS mode on the front panel, and press FUNC.  Verify the displayed
measurement is 5000 psec ±10 psec with JITTER <6 psec.

(8-3)

Set the function generator to output a square wave with a 5 nsec wide duty cycle, and a
1V 

pk-pk

 signal at 1 KHz.

(8-4)

Select EXTERNAL ARMING on ARM2 mode.  Verify sample size = 10,000.

(8-5)

Connect the CAL1 to the CH1 input channel and CAL2 to the CH2 input channel.
Connect the output of the function generator to the ARM2 input.  Go to Menu #3 and set
GATE = “ON H”.  Then press CONTINUOUS.

(8-6)

Determine the approximate amount of time it takes the DTS to obtain l0,000 samples.
This can be done by watching Menu #16.  Then change the gating duty cycle on the
function generator from 5 nsec to 2 nsec.  The time to obtain the 10,000 samples should
now be more than twice as long.

(8-7)

Remove all test equipment and cabling from the DTS.

Содержание DTS-2077

Страница 1: ...Calibration Procedure for the DTS 2077 Time Measurement System WAVECREST Corporation...

Страница 2: ...utine expression of that philosophy For this reason any current WAVECREST product may differ in some respect from its published description but will always equal or exceed the original design specific...

Страница 3: ...s 2 Reference Voltage Check 3 3 0 100MHz Oscillator Check 4 4 0 Self Calibration 4 5 0 Reference Voltage Operational Check 5 6 0 Calibration Signal Outputs 5 7 0 AC Performance Checks 6 8 0 Arming and...

Страница 4: ...cable 1 Virtual Instruments or calibration software Notes 1 Use only electronic test equipment with calibrations traceable to NIST standards 2 Refer to the DTS 2077 User s Guide for general operating...

Страница 5: ...ower Supply Checks 2 1 Verify the AC power cord is connected to an appropriate power source 110V 60 Hz or 230V 50 Hz Turn on the main power switch at the rear of the system Then turn on the standby sw...

Страница 6: ...DTS as shown in Figure 1B Verify the voltage is 5VDC 0 05V If adjustment is required both 5VDC modules must be alternately adjusted at VOUT The two 5VDC modules provide load sharing and must be balan...

Страница 7: ...internal calibration sequence by pushing the INT CAL button on the front panel The display will indicate the time remaining to accomplish the internal calibration counting down on the display When th...

Страница 8: ...lower readings on the DTS display It may be necessary to measure and set the DC voltage at the DTS input connectors using a T adapter 6 0 Calibration Signal Outputs 6 1 Using the frequency counter an...

Страница 9: ...s its calibration sequence the DTS will display CALIBRATED The previous mode and display then returns 7 2 Go to Menu 11 see Figure 2 6 in the User s Guide and place the cursor on the CLEAR field Then...

Страница 10: ...the front panel and press FUNC Verify the displayed measurement is 5000 psec 10 psec with JITTER 6 psec 8 3 Set the function generator to output a square wave with a 5 nsec wide duty cycle and a 1V pk...

Страница 11: ...ndby switch on the front panel and the main power switch on the rear of the instrument Remove all cables and unplug the AC power cord from the power source and package the accessories that accompanied...

Страница 12: ...ke Road Edina MN 55439 Yes please include me when you distribute future new versions of the DTS 2077 Calibration Procedure NAME __________________________________________________________ COMPANY _____...

Страница 13: ...adquarters West Coast Office 7275 Bush Lake Road 1735 Technology Drive Suite 400 Edina MN 55439 San Jose CA 95110 612 831 0030 408 436 9000 FAX 612 831 4474 FAX 408 436 9001 Toll Free 1 800 733 7128 1...

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