Deflection Accuracy Limits - Tektronix 2215A Instruction Manual

Performance Check Procedure— 2215A Service
Equipment Required (see Table 4-1):
Calibration Generator (Item 1)
Leveled Sine-Wave Generator (Item 2)
50-0 BNC Cable (Item 4)
INITIAL CONTROL SETTINGS
Vertical (Both Channels)
POSITION
VERTICAL MODE
BW LIMIT
VOLTS/DIV
VOLTS/DIV Variable
INVERT
Input Coupling
Horizontal
POSITION
HORIZONTAL MODE
A SEC/DIV
SEC/DIV Variable
X I0 Magnifier
A TRIGGER
VAR HOLDOFF
Mode
SLOPE
LEVEL
A&B INT
A SOURCE
A EXT COUPLING
PROCEDURE STEPS
1. Check Deflection Accuracy and Variable Range
a. Connect the standard-amplitude generator output via
a 50-fi cable to the CH 1 OR X input connector.
b. CHECK— Deflection accuracy is within the limits given
in Table 4-2 for each CH 1 VOLTS/DIV switch setting and
corresponding standard-amplitude signal. When at the 20-
mV VOLTS/DIV switch setting, rotate the CH 1 VOLTS/DIV
Variable control fully counterclockwise and CHECK that the
display decreases to 2 divisions or less. Then return the CH
4-4
VERTICAL
Midrange
CH 1
On (button in)
2 mV
CAL detent
Off (button out)
DC
Midrange
A
0.2 ms
CAL detent
Off (knob in)
NORM
P-P AUTO
OUT
Midrange
VERT MODE
INT
AC
50-0 BNC Termination (Item 5)
Dual-Input Coupler (Item 6)
10X Attenuator (Item 7)
1 VOLTS/DIV Variable control to the CAL detent and con­
tinue with the 50-mV check.
c. Move the cable from the CH 1 OR X input connector to
the CH 2 OR Y input connector. Set the VERTICAL MODE
switch to CH 2.
Table 4-2

Deflection Accuracy Limits

Standard
VOLTS/DIV
Switch Amplitude
Setting Signal
2 mV 10 mV
5 mV 20 mV
10 mV 50 mV
20 mV 0.1 V
50 mV 0.2 V
0.1 V 0.5 V
0.2 V 1 V
0.5 V
2 V
1 V 5 V
2 V 10 V
5 V 20 V
d. Repeat part b using the Channel 2 controls.
2. Check Bandwidth
„
^ . £ ULL
*
VOLTS/DIV (both)
A SEC/DIV
Vertical
Accuracy
Deflection Limits
(Divisions) (Divisions)
5 4.85 to 5.15
4 3.88 to 4.12
5 4.85 to 5.15
5 4.85 to 5.15
4 3.88 to 4.12
5 4.85 to 5.15
5 4.85 to 5.15
4
3.88 to 4.12
5 4.85 to 5.15
5 4.85 to 5.15
4 3.88 to 4.12
( o J / )
2 mV
i*s
20