2236A

The Tektronix 2236A is a 100 MHz dual-channel analog oscilloscope belonging to the legacy 2200 Series. Its defining feature is a built-in, integrated 9-digit Counter/Timer/Multimeter (C/T/M) with a dedicated vacuum fluorescent display (VFD) on the front panel, combining precision digital measurement capabilities with a high-performance analog CRT display.

Electronic Testing Frequency Measurement Voltage Measurement

Specifications

General

Parameter	Value
Display	6-inch rectangular CRT (green P31 phosphor) & 9-digit Vacuum Fluorescent Display (VFD) for C/T/M measurements

Physical

Parameter	Value
Power Supply	90 to 250 V AC, 48 to 440 Hz, 40 W typical
Operating Temperature	0 to +50 °C
Dimensions (W×H×D)	328 mm × 137 mm × 440 mm
Weight	7.3 kg

Vertical Deflection System

Parameter	Value
Number of Channels	2
Bandwidth (-3 dB)	100 MHz
Risetime	3.5 ns
Deflection Factor Range	2 mV/div to 5 V/div (in 1-2-5 sequence)
Deflection Factor Accuracy	±2% (15 °C to 35 °C)
Input Impedance (Resistance)	1 MΩ
Input Impedance (Capacitance)	22 pF
Maximum Input Voltage	400 V (DC + peak AC)
Vertical Operating Modes	CH 1, CH 2, ADD, ALT, CHOP
Channel Isolation (Crosstalk)	100:1 or better at 50 MHz
Chop Frequency	250 kHz
Invert Channel Capability	CH 2

Horizontal Deflection System

Parameter	Value
Time Base Modes	A, A INT, ALT, B
A Sweep Time Range	50 ns/div to 0.5 s/div (in 1-2-5 sequence)
B Sweep Time Range	50 ns/div to 50 ms/div (in 1-2-5 sequence)
Sweep Magnification	x10
Magnified Sweep Time Range	5 ns/div (maximum sweep speed)
Sweep Time Accuracy	±2% (Normal), ±3% (Magnified)

Triggering System

Parameter	Value
Trigger Sources	CH 1, CH 2, Line, External
Trigger Modes	AUTO, NORM, TV FIELD, SGL SWP
Trigger Coupling	AC, DC, HF REJ, LF REJ
External Trigger Input Impedance	1 MΩ in parallel with 22 pF
External Trigger Maximum Input Voltage	400 V (DC + peak AC)

X-Y Operation

Parameter	Value
X-Y Mode Deflection Factor	Same as vertical (2 mV/div to 5 V/div)
X-Axis Bandwidth	3 MHz
Phase Difference (X-Y)	±3° from DC to 150 kHz

CRT Display

Parameter	Value
Display Area (Graticule Size)	8 × 10 div (1 div = 1 cm)
Accelerating Potential	14 kV
Phosphor Type	P31 (Green)
Trace Rotation Control	Front panel adjustable

Counter/Timer/Multimeter (C/T/M)

Parameter	Value
C/T/M Display	9-digit Vacuum Fluorescent Display (VFD)
Counter Frequency Range	0.1 Hz to 100 MHz
Counter Measurement Functions	Frequency, Period, Width, Delay Time, Delta Time, 1/Delta Time
DMM DC Voltage Range	Up to 500 V
DMM AC Voltage Range	Up to 500 V RMS
DMM Resistance Range	Up to 20 MΩ
Continuity Indicator	Audible Beeper

Signal Outputs & Calibrators

Parameter	Value
Calibrator Output Frequency	1 kHz ±20%
Calibrator Waveform Shape	Square wave

Power Supply Requirements

Parameter	Value
Line Voltage Input Range	90 to 250 V AC
Line Frequency Range	48 to 440 Hz

C/T/M System

Parameter	Value
C/T/M Time Base Reference Frequency	10 MHz
C/T/M Time Base Temperature Stability	±10 ppm
C/T/M Time Base Aging Rate	±5 ppm/year

DMM System

Parameter	Value
DMM Resolution	3.5 digits
DMM Maximum Common-Mode Voltage	500 V (DC + peak AC)

Environmental

Parameter	Value
Operating Altitude	Up to 4,570 m (15,000 ft)
Non-Operating Altitude	Up to 15,240 m (50,000 ft)

Vertical System

Parameter	Value
Vertical Input Coupling	AC, DC, GND

Trigger System

Parameter	Value
External Trigger Coupling	AC, DC, DC/10

Z-Axis Input

Parameter	Value
Z-Axis Input Resistance	10 kΩ
Z-Axis Sensitivity	+5 V p-p for noticeable modulation

C/T/M Specifications

Parameter	Value
C/T/M Display Type	9-digit vacuum fluorescent display (VFD)

DMM Specifications

Parameter	Value
DMM Maximum Input Voltage	500 V (DC + peak AC)

Technology

Analog

Applications

Electronic testing and measurement

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