Tektronix 323, Instruction Manual

Page: 78 / 170

SECTION 5
PERFORMANCE CHECK
Type 323
Change information, if any, affecting this section will be found at the
rear of the manual.
Introd u ction
This section of the manual provides a procedure for check­
ing the performance of the Type 323. This procedure checks
the operation of the instrument without removing the cabi­
net or making internal adjustments. However, the adjustment
procedure is given for screwdriver adjustments which are
accessible without removing the cabinet.
If the instrument does not meet the performance require­
ments given in this procedure, internal checks and/or ad­
justments are required. See the Calibration section of this
manual. All performance requirements correspond to those
given in Section 1 of this manual.
NOTE
A ll waveforms shown in this section are actual
photographs taken directly from the graticule.
Recommended Test Equipm ent
The following test equipment and accessories are recom­
mended for a complete performance check. Specifications
given are the minimum necessary to perform this procedure.
All equipment is assumed to be calibrated and operating
within the given specifications. If equipment is substituted,
it must meet or exceed the specifications of the recommended
equipment.
For the most accurate and convenient procedure, special
Tektronix calibration fixtures are used in this procedure.
These special calibration fixtures are available from Tek­
tronix, Inc. Order by part number through your local Tek­
tronix Field Office or representative.
1. Variable DC power supply.1 Voltage range, + 6 to
+ 8 volts; current capability, 0.75 ampere; output voltage
measured within 3%; must have meter to indicate output
voltage.
2. Time-mark generator. Marker outputs, 0.5 microsecond
to five seconds; marker accuracy, within 0.1 %. Tektronix
Type 184 Time-Mark Generator recommended.
3. Standard amplitude calibrator. Amplitude accuracy,
within 0.25%; signal amplitude, five millivolts to 100 volts;
output signal, square wave and positive DC; must have
mixed display feature. Tektronix calibration fixture 067-
0502-00 recommended.
4. Square-wave generator. Must have the following out­
put capabilities (may be obtained from separate generators):
120 volts amplitude at one kilohertz repetition rate with a
one microsecond risetime; 500 millivolts into 50 ohms at
'M a y tie deleted and instrument connected dire ctly to a p p lica b le
pow er source If step 1 is not perform ed.
one kilohertz and one megahertz repetition rates with a
50 nanosecond risetime. Tektronix Type 106 Square-Wave
Generator recommended (meets both output requirements).
5. High-frequency constant-amplitude sine-wave generator.
Frequency, 350 kilohertz to above four megahertz, reference
frequency, 50 kilohertz; output amplitude, variable from five
millivolts to 0.5 volt into 50 ohms; amplitude accuracy, con­
stant within 3% at 50 kilohertz and from 350 kilohertz to
above four megahertz. Tektronix Type 191 Constant Ampli­
tude Signal Generator recommended.
6. Low-frequency constant-amplitude sine-wave generator.
Frequency, two hertz to 100 kilohertz; output amplitude,
variable from 50 millivolts to 16 volts peak to peak; ampli­
tude accuracy, constant within 3% from two hertz to 100
kilohertz. For example, General Radio 1310-A Oscillator
(use a General Radio Type 274QBJ Adaptor to provide
BNC output).
7. Cable (two). Impedance, 50 ohms; type, RG-58/U;
length, 42 inches; connectors, BNC. Tektronix Part No. 012-
0057-00.
8. Adapter. Adapts GR874 connector to BNC male con­
nector. Tektronix Part No. 017-0063-00.
9. Termination. Impedance, 50 ohms; accuracy, dr3% ;
connectors, BNC. Tektronix Part No. 011-0049-00.
10. 10X attenuator. Impedance, 50 ohms; accuracy,
± 3 % ; connectors, BNC. Tektronix Part No. 011-0059-00.
11. Input RC normalizer. Time constant, 1 megohm X
47 pF; attenuation, 2 X ; connectors, BNC. Tektronix cali­
bration fixture 067-0541-00.
12. 10X probe for Type 323. Tektronix P6049 Probe rec-
ommened (supplied accessory).
13. BNC post jack. Tektronix Part No. 012-0092-00.
14. BNC T connector. Tektronix Part No. 103-0030-00.
15. Patch cord. Length, six inches; connectors, banana
plug-jack and BNC male. Tektronix Part No. 012-0089-00
(supplied accessory).
16. Patch cord. Length, 18 inches; connectors, banana
plug-jack and BNC male. Tektronix Part No. 012-0091-00.
17. Screwdirver. Three-inch shaft, 3/32-inch bit for slotted
screws. Tektronix Part No. 003-0192-00.
PERFORMANCE CHECK PROCEDURE
G eneral
In the following procedure, control settings or test equip­
ment conneclions should be changed only as directed. If
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