2246

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.

Manuals – Specifications – Links – Pictures

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