Tektronix TDS500C Manuale Utente Scaricare il pdf (Pagina 63)

Performance Tests

TDS 500C, TDS 600B & TDS 700C Performance Verification and Specifications

1–47

b. Set the trigger mode: Press TRIGGER MENU. Now press the

main-menu button Mode & Holdoff; then press the side-menu button

Normal.

c. Set upper and lower limits that ensure triggering: See Figure 1–15.

H Press the main-menu button Type; then repeatedly press the same

button until Pulse is highlighted in the menu that pops up.

H Press the main-menu button Class; then repeatedly press the same

button until Width is highlighted in the menu that pops up.

H Press the main-menu button Trig When; then press the side-menu

button Within Limits.

H Press the side-menu button Upper Limit. Use the keyboard to set

the upper limit to 10 ns: press 10, then SHIFT, then n, and ENTER.

H Press the side-menu button Lower Limit. Use the keypad to set the

lower limit to 2 ns.

d. Change limits until triggering stops:

H Press SET LEVEL TO 50%.

H While doing the following subparts, monitor the display (it will stop

acquiring) and the front-panel light TRIG (it will extinguish) to

determine when triggering is lost.

H Press the side-menu button Lower Limit.

H Use the general purpose knob to increase the Lower Limit readout

until triggering is lost.

H CHECK that the Lower Limit readout, after the oscilloscope loses

triggering, is within 3.5 ns to 6.5 ns, inclusive.

H Enter time on test record.

H Use the keypad to return the Lower Limit to 2 ns and reestablish

triggering.

H Press the side-menu button Upper Limit; then use the general

purpose knob to slowly decrease the Upper Limit readout until

triggering is lost.

H CHECK that the Upper Limit readout, after the oscilloscope loses

triggering, is within 3.5 ns to 6.5 ns, inclusive.

H Enter time on test record.

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 147 148

Nessun commento

Tektronix TDS500C Manuale Utente Pagina 63