3L5: Difference between revisions

Revision as of 14:44, 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

Specifications

please add

Pictures

1 MΩ version

1 MΩ Version
1 MΩ later version with Video Filter Switch

75 Ω version

75 Ω version of 3L5, front
75 Ω version, front/top
75 Ω version, left
75 Ω version, top
75 Ω version, bottom left
75 Ω version
75 Ω version
75 Ω version, back

@@ Line 27: / Line 27: @@
 ===Timebase Support===
 L5 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 [[560_Series_plug-in_interface|plug-in connector]] )
+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 [[560_Series_plug-in_interface|plug-in connector]]).
 {| class="wikitable"