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2212
Tektronix 2212 User Manual
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Interfaces
®
Serial
Communications
(RS-232-C)
Interface
Connector
(Option
12)
The
Serial
Communications
Interface
provides
an
RS-232-C
communications
interface
connection
meeting
the
EIA
RS-232-C
standard
for
data
terminal
equipment.
To
oper-
ate
the
interface
use
the
following
procedure:
Step
1.
Connect
a
RS-232-C
cable
to
the
25-pin
male
Sub-D
connector
(see
Table
5-5)on
the
2212.
Step
2.
Select
settings
of
the
serial
interface
(RS-232-C)
in
the
MENU
display
(see
Figure
5-8a).
With
Option
12
installed,
the
instrument
is
fully
remote
programmable.
Connections
for
signal
ground
and
shield
ground
are
also
provided
for
grounding
between
the
instrument
and
an
external
device.
Table
5-5
lists
the
function
of
each
pin
of
the
RS-232-C
DTE
port
(male).
Table
5-5:
RS-232-C
DTE
Connector
Pin
Signal
Name
Function
CHAS
Chassis
ground
GND
TXD
Transmitted
data
RXD
Received
data
4
RTS
Request
to
send
5
CTS
Clear
to
send
6
DSR
Data
set
ready
SIG
Signal
ground
GND
8
RLSD
Received
line
signal
detect
20
DTR
Data
terminal
ready
•
Only
these
lines
are
required
for
communication
with
software
handshaking
(X-ON,
X-OFF)
2212
User
Manual
5
-
53
138
140
Table of Contents
Table of Contents
9
Welcome
7
Related Documentation
8
Table of Contents
9
List of Illustrations
16
Product Description
19
Safety
20
Symbols and Terms
20
Specific Precautions
21
Consignes de Securite
23
Preparation for Use
25
Initial Setup
27
Probe Compensation
29
Low-Frequency Compensation
29
Figure 2-1: Probe Compensation
30
Non-Store Displays
31
Normal Sweep Display
32
Magnified Sweep Display
33
Alternating Magnified
33
Sweep Display
33
X-Ydisplay
34
Single Sweep Display
35
Digital Storage Displays
37
Store Mode Display
38
HOLD Mode Display
39
Single Sweep Display
41
SGL Sweep Record Mode
41
SGL Sweep Roll Mode
43
X-Y Display (Storage Mode)
45
Observing Aliases
46
Figure 2-2: Aliasing
46
Anti-Aliasing
48
Measurement Examples
49
Non-Storage Measurement Examples
49
AC Peak-To-Peak Voltage
50
Measurement
50
Voltage Ratio
52
Measurement
52
Figure 3-2: Voltage Ratios
52
Algebraic Addition Measurement
54
Common-Mode Rejection Measurement
56
Rise Time Measurement
58
Figure 3-5: Risetime Measurement
58
Frequency Measurement
60
Figure 3-6: Frequency Measurement
60
Time Difference Measurement between Two Time-Related Pulses
62
Figure 3-7: Time Difference Measurement
62
Time Ratio Measurement
64
Figure 3-8: Time Ratio Measurement
64
Phase Difference Measurement
66
Figure 3-9: Phase Difference Measurement
66
Small-Angle Phase Difference Measurement
68
Figure 3-10: Small-Angle Phase Difference Measurement
68
Percent Modulation Measurement
70
Figure 3-11: Percentage Modulation
70
TV Line Signal Measurement
72
TV Field Signal Measurement
73
Digital Storage Measurement Examples
75
Waveform Comparison Measurement
76
Rise Time Measurement in Store Mode
78
At a Glance
81
Display Map
82
Front Panel Map - Storage, Setup and Cursors Operation
83
Front Panel Map - Vertical System
84
Front Panel Map - Triggering and Horizontal System
85
Rear Panel Map
86
General
87
Display
89
Display Controls
89
Internal Graticule
89
INTENSITY Control
90
TOGGLE TR/RO Switch
91
FOCUS Control
91
BEAM FIND Switch
91
POWER ON/OFF Switch
91
Trace Rotation Adjustment
92
Vertical Operation
93
Vertical Non-Store (Analog) Display Mode
93
Vertical Store (Digital) Display Mode
94
Figure 5-2: Vertical Controls and Connectors
94
Vertical Controls and Connectors
95
Channel 1 Vertical POSITION Control
95
Channel 2 Vertical POSITION Control
95
Vertical MODE Switch
95
CH 2 INVERT Switch
96
VOLTS/DIV Switches
97
AC-GND-DC Input Coupling Switches
97
Table 5-1: Probe Coding
97
Ariable VOL TS/DIV (VAR) Controls
98
Band-Width Limit Switch
98
CH 1 or X and CH 2 ORY Input Connectors
99
Horizontal Operation
101
Horizontal Controls and Switches
102
Horizontal POSITION Control
102
Figure 5-3: Horizontal Controls and Switches
102
TRACE Separation (TRACE SEP) Control
103
SEC/DIV Switch
104
Xl, X10, X50 Magnify Switch
105
Variable SEC/DIV (VAR) Control
105
Table 5-2: Storage Modes
105
GND Connector
106
PROBE ADJUST Connector
106
Figure 5-4: Trigger Controls and Connector
107
Trigger Controls and Connector
108
Trigger LEVEL Control
108
TRIG'D Indicator
108
Trigger SLOPE Switch
108
HOLDOFF Control
109
RESET Switch
109
READY Indicator
110
Trigger MODE Switch
110
Trigger SOURCE Switch
111
Ext=Zswitch
112
EXT INPUT or Z Input Connector
112
Trigger COUPLING Switch
113
Trigger
107
Cursors
115
Cursor Control Functions
116
Cursor on Switch
116
Figure 5-5: Cursor Controls
116
Cursor POSITION Control
117
TOGGLE CURSOR Switch
117
Measurement Mode Switch
117
Cursor Functions
118
Ll Vl Cursor Function
118
Ll V2 Cursor Function
118
Ll V Cursor Function
118
VX Cursor Function
119
VY Cursor Function
119
RATIO (I'lt) Function
119
Table 5-3: Voltage Cursor Function Readout
120
1/Llt and PHASE Cursor Function
122
T Function
122
PHASE ( 1/ Ll T) Function
122
Table 5-4: Time/Frequency Cursor Function Readouts
122
Figure 5-6: Storage Controls
123
Storage Controls
124
Store on Switch
124
PRETRIG Switch
124
HOLD ON/OFF Switch
124
RECALL Reference Switch
125
SA VE Reference Switch
125
Print Screen (PRNSCR) Function
126
Storage
123
Setup
127
SETUP Controls
128
AUTO Setup Switch
128
Figure 5-7: SETUP Controls
128
SAVE Setup Switch
129
RECALL Setup Switch
129
MENU Types
130
Making Hardcopies
131
User Text on
131
Figure 5-8: Hardcopy Menu Settings
131
Textstring
134
Power
135
Fuse Holder
135
Figure 5-9 Rear Panel (Partial)
135
Power Cord Receptacle
136
Interfaces
137
External Clock Input (EXT CLK)
138
Serial Communications (RS-232-C) Interface Connector (Option 12)
139
Table 5-5: RS-232-C DTE Connector
139
RS-232-C Menu
140
GPIB (IEEE STD 488.2 1987) - Interface Connector
141
Gpibmenu
141
Table 5-6: GPIB Connector
142
Parallel Printer Interface Connector
144
Table 5-7: Parallel Printer Interface Connector
145
CRT Readout
147
Figure 5-10: CRT Readout Display
148
Top Row Readouts
149
Cursor Type
149
Cursor Delta Value
149
Trigger
150
Trigger Value
150
Trigger Source
150
Bottom Row Readouts
151
CH 1 Vertical Deflection
151
Add
151
CH 2 Vertical Deflection
151
Horizontal Deflection
152
Acquisition Mode
152
Addr
152
Rem
152
Probes
153
Passive Voltage Probes
154
General Purpose (High Input Resistance) Probes
154
High Voltage Probes
154
Active Voltage Probes
155
Current Probes
156
Differential Probes
157
Table 5-8: Summary of Tektronix Measurement Probes
158
Ground Lead Inductance
159
Misadjustment of Probes
160
Maintenance and Repair
161
Repackaging for Shipment
162
Appendix A: Options Accessories
163
Standard Accessories
164
Options
164
Options al -A5 International Power Cords
164
Table A-1: Standard Accessories
164
Option 3R Rackmounted Instrument
165
Table A-2: Power Cord Options
165
Option 10 (GPIB
166
Option 12 (RS-232-C
166
Option 1K
166
Option 1T
166
Option 18
166
Option 23
166
Optional Accessories
167
Instrument Enhancements
167
Fuses
167
Voltage Probes
167
Current Probes
168
Oscilloscope Cameras
168
Appendix B: Specifications
169
General Product Description
169
User Interface
169
Indicators
169
Signal Acquisition System
170
Vertical Non-Storage Deflection System
172
Horizontal Display System
173
Horizontal Non-Storage Display System
173
Horizontal Storage Display System
173
Triggering System
175
Setup
175
Cursor
176
Storage and 1/0
177
Display
178
Nominal Traits
179
Table B-1: Nominal Traits: Vertical System
179
Table B-2: Nominal Traits: Horizontal System
180
Table B-4: Nominal Traits: Display System
181
Table B-6: Nominal Traits: Mechanical
182
Warranted Characteristics
183
Performance Conditions
183
Table B-7: Warranted Characteristics: Vertical System
184
Table B-8: Warranted Characteristics: Horizontal System
185
Table B-9: Warranted Characteristics: Triggering System
186
Table B-11: Warranted Characteristics: Readout Display
191
Table B-12: Warranted Characteristics: X-Y Display System
193
Table B-14: Warranted Characteristics: Power Requirements
194
Table B-15: Warranted Characteristics: Environmental Safety and Reliability
196
Typical Characteristics
197
Table B-16: Typical Characteristics: Vertical System
198
Table B-17: Typical Characteristics: Horizontal System
200
Table B-18: Typical Characteristics: Triggering System
201
Appendix C: Performance Verification
203
Performance Tests
203
Conventions
203
Initial Setup Procedure
204
Test Equipment Required
204
Table C-1: Test Equipment Required
205
Preparation
208
Limits and Tolerances
208
Index to Performance Tests
209
Vertical Checks
210
Check Deflection Accuracy
212
Check Trace Shift
212
Table C-2 Deflection Accuracy Limits
213
Check Non-Store (Analog) Bandwidth
213
Horizontal Checks
215
Table C-3 Settings for Timing Accuracy Checks
219
Triggering Checks
220
Check Sweep Length
220
Check 500 Hz Trigger Sensitivity
222
Check 5 Mhz Trigger Sensitivity
223
Check 50 Mhz Trigger Sensitivity
223
Check 500 Khz Trigger Sensitivity
223
Check Trigger Readout Accuracy
226
Probe Adjust Check
228
X-Y Display Checks
229
Check Probe Adjust Operation
229
Check X-Axis Bandwidth
231
Table D-1: Default Control Settings
233
Vertical (CH 1 and CH 2)
233
Position
233
Horizontal
233
Sec/DIV
233
X1, Xlo, X50 Magnifier
233
Appendix D: Control Settings at Power up
234
Default Control Settings
234
Trigger
234
Holdoff
234
Level
234
Slope
234
Source
234
Appendix E: Glossary Index
236
System
238
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Tektronix 2212 Specifications
General
Brand
Tektronix
Model
2212
Category
Test Equipment
Language
English
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