2 Check Bandwidth

VOLTS/DIV (both) 2 mV

SEC/DIV 20 jus b. Connect the leveled sine-wave generator output via a 50-S2 cable and a 50-ii termination to the CH 1 OR X input connector.

c. Set the generator output amplitude for a 5-division, 50-kHz display.

b. Connect a 10-MHz, leveled sine-wave signal via a 50-i2 cable, a 50-i2 termination, and a dual-input coupler to the CH 1 OR X and the CH 2 OR Y input connectors.

c. Set the generator output amplitude to produce a 6-division display.

d. Vertically center the display using the Channel 2 POSITION control. Then set VERTICAL MODE to CH 1 and vertically center the display using the Channel 1 POSITION control.

e. Set the VERTICAL MODE switches to BOTH and ADD; then push in the INVERT button.

d. Change the generator output frequency to the value shown in Table 4-3 for the corresponding VOLTS/DIV switch setting.

Table 4-3 Settings for Bandwidth Checks

VOLTS/DIV

Generator

Switch Settings

Output Frequency

2 mV to 10 mV

50 MHz

20 mV to 10 V

60 MHz

e. CHECK-Display amplitude is 3.5 divisions or greater.

f. Repeat parts c through e for all indicated CH 1 VOLTS/DIV switch settings, up to the output-voltage upper limit of the sine-wave generator being used.

g. Move the generator output signal from the CH 1 OR X input connector to the CH 2 OR Y input connector. Set the VERTICAL MODE switch to CH 2.

f. CHECK—Display amplitude is 0.6 division or less.

g. If the check in part f meets the requirement, skip to part n. If it does not, continue with part h.

h. Set VERTICAL MODE to CH 1.

i. Change the generator frequency to 50 kHz and adjust the output to obtain a 6-division display.

j. Set VERTICAL MODE to BOTH.

k. Adjust the CH 2 VOLTS/DIV Variable contol for minimum display amplitude (best CMRR).

I. Change the generator frequency to 10 MHz. m. CHECK—Display amplitude is 0.6 division or less.

n. Disconnect the test setup.

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