2245: Difference between revisions
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{{Spec | Cursors| Time, Volts }} | {{Spec | Cursors| Time, Volts }} | ||
{{Spec | Interface| Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector }} | {{Spec | Interface| Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector }} | ||
{{Spec | CRT | Acceleration 16.4 (−2.7/+13.7) kV }} | |||
{{Spec | Probes| Two [[P6109]] 100 MHz ×10 probes, [[BNC connector]] with a [[readout pin]] }} | {{Spec | Probes| Two [[P6109]] 100 MHz ×10 probes, [[BNC connector]] with a [[readout pin]] }} | ||
{{Spec | Power| 90 − 250 V<sub>AC</sub>, 48 − 445 Hz; 100 W max. }} | {{Spec | Power| 90 − 250 V<sub>AC</sub>, 48 − 445 Hz; 100 W max. }} | ||
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==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
US Tektronix 2245A FrontRAW.JPG|2245A | |||
Tek2245.jpg | Tek2245.jpg | ||
Tek 2245a 4trace.jpg | Tek 2245a 4trace.jpg | ||
Tek 2245a square trace.jpg|2245A | Tek 2245a square trace.jpg|2245A | ||
</gallery> | </gallery> | ||
{{CRTs|2245}} | |||
{{CRTs|2245A}} | |||
{{Custom ICs|2245}} | |||
{{Custom ICs|2245A}} | |||
[[Category:2246 series scopes]] | [[Category:2246 series scopes]] | ||
Revision as of 01:22, 10 April 2022
The Tektronix 2245 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 2245 includes features like AUTO SETUP which automatically adjusts vertical, horizontal, and triggering and display controls to provide a stable, triggered display of the waveform in seconds; Dual Time base with Delayed Sweep; Cursor Time/Voltage Measurements; On-Screen Scale Factor Readouts.
Key Specifications
| Bandwidth | 100 MHz |
|---|---|
| Deflection | CH 1, CH 2: 2 mV/div to 5 V/div in 1-2-5 seq; 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 in 1-2-5 seq; B Time Base: 5 ms/div to 20 ns/div in 1-2-5 seq (×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 |
| Cursors | Time, Volts |
| Interface | Ext Counter/Timer Base Input connector; Ext Z-Axis Input connector |
| CRT | Acceleration 16.4 (−2.7/+13.7) kV |
| Probes | Two P6109 100 MHz ×10 probes, BNC connector with a readout pin |
| Power | 90 − 250 VAC, 48 − 445 Hz; 100 W max. |
Repair Information
Links
Pictures
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CRTs used in the 2245
No results
CRTs used in the 2245A
| Page | Part nos | Description | Designers | Used in |
|---|---|---|---|---|
| T4656 | 154-0905-00 | CRT | 2245A • 2246 • 2246A • 2247A |
Custom ICs used in the 2245
| Page | Model | Part nos | Description | Designers | Used in |
|---|---|---|---|---|---|
| M377 | M377 | 165-2129-03 • 165-2089-06 • 155-2089-05 | amplifier | John Addis | 11A16 • 11A32 • 11A33 • 11A34 • 11A52 • 2245 • 2245A • 2247 • 2247A • 2252 • TDS410 • TDS420 • TDS460 • TDS520D • TDS540D • TDS580D • TDS680C • TDS684C • TDS714L • TDS724D • TDS754D • TDS784D |
Custom ICs used in the 2245A
| 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 | |
| 165-2232-01 | 165-2232-01 | 165-2232-01 | buffer amplifier | 2245A | |
| 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 | |
| M377 | M377 | 165-2129-03 • 165-2089-06 • 155-2089-05 | amplifier | John Addis | 11A16 • 11A32 • 11A33 • 11A34 • 11A52 • 2245 • 2245A • 2247 • 2247A • 2252 • TDS410 • TDS420 • TDS460 • TDS520D • TDS540D • TDS580D • TDS680C • TDS684C • TDS714L • TDS724D • TDS754D • TDS784D |