3L5: Difference between revisions
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{{BeginSpecs}} | |||
{{Spec | Center Frequency Range | 50 Hz to 990 kHz}} | |||
{{Spec | Dispersion Range | 10 Hz to 100 kHz}}} | |||
{{Spec | Input Impedance | ≈ 1 MΩ // 30 pF }} | |||
{{Spec | Input Voltage | Max. 300 V (DC + peak AC) }} | |||
{{Spec | Vertical Resolution | Video - .1 v/div to 100 v/div, LIN - .001 V to 2V RMS}} | |||
{{Spec | Internal Cal Signal | 5 kHz ±1%}} | |||
{{Spec | First LO Out | ≥1 MHz (Sweep), ≥1 V<sub>p-p</sub> into ≥1 kΩ}} | |||
{{Spec | Recorder Out | 5 mV to 15 mV into 600Ω}} | |||
{{Spec | Weight | ≈6 pounds }} | |||
{{EndSpecs}} | |||
==Pictures== | ==Pictures== | ||
Revision as of 17:16, 1 September 2020
The Tektronix 3L5 is a 50 Hz — 1 MHz spectrum analyzer plug-in for 560-series scopes.
It is very similar to the 1L5 and can be used to measure the spectrum of signals. In conjunction with the 015-0107-00 "Swept Frequency Generator" (tracking generator), the 3L5 can also be used to make scalar frequency response measurements. A video filter switch was added to the later SNs (1971 Catalog).
75 Ω Version
There is also a 75 Ω version of the 3L5. Its input is on the rear, via a coaxial connector. A lever on the front panel switches between two frequency ranges:
- 10 kHz - 1 MHz
- 18.010 MHz - 19 MHz
Timebase Support
3L5 requires a timebase plug-in in the horizontal compartment to operate. Timebase plug-in units with serial no listed and below require modification 040-0413-00 to provide the sweep signal to the 3L5 (To pin 18 of the plug-in connector).
| Time Base | SN# |
|---|---|
| 2B67 | 15180 |
| 3B1 | 4040 |
| 3B3 | 4270 |
| 3B4 | 740 |
Key Specifications
}| Center Frequency Range | 50 Hz to 990 kHz |
|---|---|
| Dispersion Range | 10 Hz to 100 kHz |
| Input Impedance | ≈ 1 MΩ // 30 pF |
| Input Voltage | Max. 300 V (DC + peak AC) |
| Vertical Resolution | Video - .1 v/div to 100 v/div, LIN - .001 V to 2V RMS |
| Internal Cal Signal | 5 kHz ±1% |
| First LO Out | ≥1 MHz (Sweep), ≥1 Vp-p into ≥1 kΩ |
| Recorder Out | 5 mV to 15 mV into 600Ω |
| Weight | ≈6 pounds |
Pictures
1 MΩ version
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1 MΩ Version
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1 MΩ later version with Video Filter Switch
75 Ω version
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75 Ω version of 3L5, front
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75 Ω version, front/top
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75 Ω version, left
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75 Ω version, top
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75 Ω version, bottom left
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75 Ω version
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75 Ω version
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75 Ω version, back
