Adjustment Procedures
This section contains adjustment procedures for the TBS1000 series oscilloscopes.
Only qu alified personnel should perform service procedures. Read the Service
Safety Summary and the General Safety Summary at the beginning of this
manual before performing any service procedures. Refer to the u ser m anual for
information about using these oscilloscopes.
NOTE. The voltage references inside the oscilloscopes are very stable over time
and do not r
equire ro utine updates. Do not perform any procedure in this section
unless the oscilloscope does not meet specifications. Refer to the Performance
Verification section to check the oscilloscope performance to specifications.
Require
dEquipment
The equipment described in the followi ng table, or a suitable e quivalent, is
required to complete these procedures. (See Table 5-1.)
Table 5
-1: Required equipment
Descri
ption
Minimu
m requirements s
Exampl
e
DC Vol
tage Source
-20 V t
o 2 0 V, ± 0.1% accuracy
Level
ed Sinewave Generator
5kHza
nd 200 MHz, ±0.6% amplitude accuracy
Wavet
ek 9100 Universal Calibration
System with Oscilloscope Calibration
Module (Option 250)
Fluk
e 5500A Multi-product Calibrator with
Oscilloscope Calibration Option (Option
5500A-SC)
50 Ω BNC Cable BNC male to BNC male, ≈ 1 m (36 in) long
Tektronix part number 012-0482-XX
50 Ω BNC Cable (seven) BNC male to BNC male, ≈ 25 cm (10 in) long
Tektronix part number 012-0208-XX
50 Ω Feedthrough Termination BNC male and female connectors
Tektronix part number 011-0049-XX
Dual Banana to BNC Adapter Banana plugs to BNC female
Tektronix part number 103-0090-XX
BNC T (three) One male and two female BNC connectors
Tektronix part number 103-0030-XX
Adjustment Procedure
The a djustment procedure consists of 70 steps for the 2-channel oscilloscope and
106 steps for the 4-channel model. Each step requires an external voltage source
for new calibration constants.
Before performing the adjustment procedure, warm up the oscilloscope for at least
ten minutes in an ambient temperature between 20 °C and 30 °C. Adjustm ents
performed before warm up or outside this temperature range may result in poor
performance.
TBS1000 Series Oscilloscope Service Manual 5–1
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