Adjustment Procedures

TDS 684A, TDS 744A, & TDS 784A Service Manual 5–5

Equipment Required

Table 5–4 lists the test equipment required to adjust the TDS 684A and

7XXA Digitizing Oscilloscopes.

Table 5–4: Test Equipment, Fixtures, and Supplies

Item Number and
Description Minimum Requirements Example Purpose
1. Adapter, BNC-Female-to-
BNC-Female Tektronix part number
013-0028-00 Tektronix part number
013-0028-00 Probe Adjustment
2. Adapter, Probe Tip to
BNC, 50 W termination Tektronix part number
013-0227-00 Tektronix part number
013-0227-00 Probe Adjustment
3. Adjustment Tool Less than 1/8 inch diameter and
over 2 inches long Tektronix part number
003-0675-00 Software-based Adjustments
(used as a probe) and Manual
Adjustments
4. Adjustment Tool 7/32 inch hex wrench on both
ends GC Electronics #8606 A30 CRT Driver adjustment
5. Attenuator, 10X
(Two required) Ratio: 10X; impedance 50 W;
connectors: female BNC input,
male BNC output
Tektronix part number
011-0059-02 Software-based Adjustments
6. Attenuator, 2X Ratio: 2X; impedance 50 W;
connectors: female BNC input,
male BNC output
Tektronix part number
011-0069-02 Software-based Adjustments
7. Cable GPIB IEEE Std 488.1–1987/
IEEE Std 488.2–1987 Tektronix part number
002-0991-01 Software-based Adjustments
8. Coupler, Dual-Input Tektronix part number
067-0525-02 Software-based Adjustments
9. Cable, Precision
Coaxial 50 W, 36 in, male to male BNC
connectors Tektronix part number
012-0482-00 Software-based Adjustments
10. Connector, Dual-
Banana Female BNC to dual banana Tektronix part number
103-0090-00 Software-based Adjustments
11. Generator, Calibration High Amplitude pulse with
variable amplitude of at least
60 V.
Tektronix PG 506A1 Calibration
Generator Probe Adjustment
12. Generator, DC
Calibration Variable amplitude to ±104 V;
accuracy to 0.1% Data Precision 8200 Software-based Adjustments
13. Generator, Leveled Sine
Wave, Medium-Frequency 200 kHz to 250 MHz; Variable
amplitude from 5mV to 4 Vp-p
into 50 W; flatness3 %;
harmonic content: 2nd harmonic
down –30 dB from fundamental;
all others down –40 dB
Tektronix SG 5031 or SG50301
Leveled Sine Wave Generator Software-based Adjustments