Tektronix DM 5010, Инструкция по эксплуатации

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Operating Instructions—DM 5010
Fig. 2-6, Setup for calculation example 2.
Set the sinewave generator to mid-range (5 kHz in this
example); adjust the sinewave generator amplitude for a 1 V
reading
on the DM 5010.
Press the DM 5010 dBr button. The display reads 0.0.
Reduce the sinewave generator frequency until the
DM 5010 display reads —3.00. (Do not readjust amplitude.)
The frequency of the generator is the lower -3 dB point of
the audio amplifier.
Example 3: Using COMPARE to select resistors within 2%
of the nominal value.
The COMPARE and X-B/A calculations may be com­
bined in the above example. This combination eliminates fig­
uring the highest and lowest in-toierance values; only the
nominal resistance value and the tolerance are used as
constants.
Set constant B to 15000 (nominal resistance).
Set constant A to 150 where A = B (.01). This converts
the difference between nominal value and actual value to a
per cent.
Set one LIMITS constant to 2 (for a 2% tolerance).
Set the DM 5010 front-panel controls as follows:
Set the other LIMITS constant to —2.
OHMS on
NULL
off
LOW FREQ RESPONSE
off
RANGE AUTO
TRIGGER MODE RUN
CONVERSION RATE FAST off
CALCULATIONS
COMPARE
on
all others off
REAR INPUT off
To select 15 kfi resistors within 2% of the nominal value,
set one LIMITS constant to 15300. Set the other LIMITS
constant to 14700. Connect the first resistor to the
DM 5010 front-panel HIGH and LOW input connectors.The
DM 5010 displays HI or LO if the resistor is above or below
the 2% tolerance. PASS is displayed if the resistor is be­
tween or equal to the limits.
Press X-B/A.
The DM 5010 displays PASS, Hi, or LO.
Repackaging Information
If this Tektronix instrument is to be shipped to a
Tektronix Service Center for service or repair, attach a tag
showing owner (with address) and the name of an individual
at your firm that can be contacted. Include the complete
instrument serial number and a description of the service
required.
Save and re-use the package in which the instrument
was shipped. If the original packaging is unfit for use or not
available, repackage the instrument as follows:
2-12