2246

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The Tektronix 2246 is a 100 MHz four-channel analog oscilloscope. Channels 1-2 are fully-functional, whereas 3-4 are limited in both deflection factor and coupling, as they are intended mainly for digital and trigger signals.

The 2246 includes many of the same features of the 2245A and adds auto-tracking SmartCursors which track the selected measurement, trigger level, or ground. There are Labeled Volts Cursors with Ground-Referenced Readings and On-Screen Readouts; Hands-Off Voltmeter Measurements of DC Volts, +Peak and -Peak Volts, and P-P Volts; SmartCursors Integrate Voltage, Time, Frequency, and Phase Measurements, and are available in ALT and B Horizontal Modes.

Key Specifications

Bandwidth	100 MHz
Deflection	CH 1, CH 2: 2 mV/div to 5 V/div (1–2–5); CH 3, CH 4: 0.1 V/div and 0.5 V/div, all ±2%; BW Limit: 20 MHz ±15%
Vertical Operating Modes	CH1,2,3,4, CH2 Invert, Add, Alt, Chop (625 kHz)
Input Impedance	1 MΩ ±1.0% // 20 pF ±1 pF
Maximum Input Voltage	400 V (DC + peak AC) or 800 V (p-p ac at ≤ 10 kHz)
Sweep Speeds	A Time Base: 0.5 s/div to 20 ns/div (1–2–5); B Time Base: 5 ms/div to 20 ns/div (1–2–5, ×10 magnifier to 2 ns/div)
Trigger	DC, Noise Reject, HF Reject, LF Reject, AC, TV Line, TV Field
Trigger Modes	A Mode: Auto Level, Auto, Norm, TV Line, TV Field, Single Seq. B Mode: Runs After Delay, Auto Level, Norm, TV Line (From A Source)
Trigger Source A & B	Vert, CH1, 2, 3, 4, Line
Voltmeter	DC, +Peak, −Peak, PK-PK, Gated Volts, Smart Tracking Cursors: Volts, GND, Trigger Lvl
Cursors	Time, 1/Time, Delta Time, 1/Delta Time, Delta Phase, Volts
Interface	Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector
Probes	Two P6109 100 MHz ×10 probes, BNC connector with a readout pin
Power	90 − 250 VAC, 48 − 445 Hz, 100 W max.

Models

• 2246
• 2246 1Y
• 2246 2R
• 2246 Mod A
• 2246A

See Also

• 067-0557-00

Pictures

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  2246A

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CRTs used in the 2246

Page	Part nos	Description	Designers	Used in
T4656	154-0905-00	CRT		2245A • 2246 • 2246A • 2247A

Custom ICs used in the 2246

Page	Model	Part nos	Description	Designers	Used in
155-0322-00	M429	155-0322-00	vertical output amplifier		2245A • 2246
156-2654-00	156-2654-00	156-2654-00	ECL "fast logic"		2245A • 2246
156-2655-00	156-2655-00	156-2655-00	"slow logic"		2245A • 2246
165-2154-00	165-2154-00	165-2154-00	buffer amplifier		2246
234-0203-20	M376-003	234-0133-20 • 234-0203-20 • 234-0238-20	amplifier		2245A • 2246
234-0401-20	234-0401-20	234-0401-20 • 234-0401-21	horizontal preamplifier		2245A • 2246
M376-004	M376-004	234-0204-20 • 234-0239-30 • 234-0239-31	trigger		2245A • 2246