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Performance Tests
4–16
TDS 684A, TDS 744A, & TDS 784A Service Manual
Equipment Required
These procedures use external, traceable signal sources to directly check
warranted characteristics. The required equipment list follows this introduction.
Table 4–1: Test Equipment
Item Number and
Description
Minimum Requirements Example Purpose
1. Attenuator,10X
(two required)
Ratio: 10X; impedance 50 W; connec-
tors: female BNC input, male BNC
output
Tektronix part number
011-0059-02
Signal Attenuation
2. Attenuator, 5X Ratio: 5X; impedance 50 W; connec-
tors: female BNC input, male BNC
output
Tektronix part number
011-0060-02
Signal Attenuation
3. Adapter, BNC female to
Clip Leads
BNC female to Clip Leads Tektronix part number
013-0076-00
Signal Coupling for Probe
Compensator Output Check
4. Terminator, 50 W Impedance 50 W; connectors: female
BNC input, male BNC output
Tektronix part number
011-0049-01
Signal Termination for Chan-
nel Delay Test
5. Cable, Precision 50 W
Coaxial (two required)
50 W , 36 in, male to male BNC
connectors
Tektronix part number
012-0482-00
Signal Interconnection
6. Connector, Dual-Banana
(two required)
Female BNC to dual banana Tektronix part number
103-0090-00
Various Accuracy Tests
7. Connector, BNC “T” Male BNC to dual female BNC Tektronix part number
103-0030-00
Checking Trigger Sensitivity
8. Coupler, Dual-Input Female BNC to dual male BNC Tektronix part number
067-0525-02
Checking Delay Between
Channels
9. Generator, DC Calibra-
tion
Variable amplitude to ±104 V; accura-
cy to 0.1%
Data Precision 8200 Checking DC Offset, Gain,
and Measurement Accuracy
10. Generator, Calibration 500 mV square wave calibrator
amplitude; accuracy to 0.25%
Tektronix PG 506A
1
To check accuracy of CH 3
Signal Out
11. Generator,
Leveled Sine Wave,
Medium-Frequency
200 kHz to 250 MHz; Variable ampli-
tude from 5 mV to 4 V
p-p
into 50 W
Tektronix SG 503 Leveled
Sine Wave Generator
1
Checking Trigger Sensitivity
at low frequencies
12. Generator, Leveled Sine
Wave, High-Frequency
250 MHz to 1 GHz; Variable ampli-
tude from 500 mV to 4 V
p-p
into 50 W;
6 MHz reference
Tektronix SG 504 Leveled
Sine Wave Generator
1
with
SG 504 Output Head
Checking Analog Bandwidth
and Trigger Sensitivity at high
frequencies
13. Generator, Time Mark Variable marker frequency from 10 ms
to 10 ns; accuracy within 2 ppm
Tektronix TG 501A Time
Mark Generator
1
Checking Sample-Rate and
Delay-time Accuracy
14. Probe, 10X A P6139A or P6245 probe
2
Tektronix part number
P6139A or P6245
Signal Interconnection