Calibration—475
g. Repeat the bandwidth check procedure, step 12-c
through 12-e.
CH 2 input via a GR-to-BNC adapter, 42-inch 50 £2 BNC
cable, X I0 BNC attenuator, and a 50 £2 BNC termination.
h. Disconnect the test.se.tuiL
13. Check Cascaded Bandwidth
d. Adjust the Medium-Frequency signal generator for a
five-division display of a 50 kilohertz signal.
a. Set both AC-GND-DC switches to DC, the A TIM E /
DIV switch to 1 ms, and the VERT MODE switch to CH 1.
e. Without changing the output amplitude of the signal
generator, increase the output frequency until the display is
reduced to 3.5 divisions.
b. Connect the CH 2 VERT SIGNAL OUT (on the rear
panel) to the CH 1 input via a 42-inch 50 £2 BNC cable and
a 50 £2 BNC termination.
f. C H E C K —Output frequency of the Medium-
Frequency signal generator must be at least 50 megahertz.
c. Connect the output of the Medium-Frequency
Constant-Amplitude Signal Generator (Type 191) to the
g. Disconnect the test setup.
TRIGGER SYSTEM CHECK
Equipment Required
1. Standard Amplitude Calibrator (067-0502-01).
6. 42-inch 50 ft BNC Cable.
2. M edium -Frequency Constant-Amplitude Signal
Generator (Type 191).
7. 18-inch 50 ft BNC Cable.
A X# *fl A A It 1 A A . .
8. X I0 BNC Attenuator.
3. 50 £2 Signal Pickoff Unit (Type CT-3).
9. X2 BNC Attenuator.
4. 50 £2 5 nanosecond GR Cable.
10. 50 £2 BNC Termination (two).
5. GR-to-BNC female Adapter.
11. Dual Input Coupler (two).
Control Settings
Preset instrument controls to the settings given under
Preliminary Control Settings except as follows:
18-inch 50 £2 BNC cable, a 50 £2 BNC termination, and a
dual input coupler.
both TIM E /D IV 0.05
fJis
c. Adjust the Medium-Frequency signal generator to
maintain a 0.3-division display of a 50 kilohertz signal.
14. Check A Triggering
d. Rotate the A SLOPE switch between + and —.
a. Connect the output of the Medium-Frequency
Constant-Amplitude Signal Generator (Type 191) to the A
External Trigger input via a 50 £2 5 ns GR cable, 50 £2
Signal Pickoff Unit (Type CT-3) thru output, GR-to-BNC
adapter, X I0 BNC attenuator, X2 BNC attenuator, 50 £2
BNC termination, and a dual input coupler.
e. CHECK—A stable display can be obtained on both
slopes of the displayed waveform in all positions of the A
COUPLING switch by adjusting the A LEVEL control.
b. Connect the 10% BNC output connector of the 50 £2
Signal Pickoff Unit to the CH 1 and CH 2 inputs via an
f. Set the A SOURCE switch to CH 1.
g. CHECK—Repeat steps 14-d and 14-e.
®
5-9
g. CHECK—Repeat steps 14-d and 14-e.
To Next Page
Loading...
Need help?
General
