7L5

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Manuals – Specifications – Links – Pictures

The Tektronix 7L5 is a low frequency (10 Hz – 5 MHz) spectrum analyzer plug-in for 7000-series scopes. It has built-in digital storage, so it will work fine in non-storage mainframes such as the large-screen 7603. It also features digital scale and marker level/frequency (6 digits) readout, and a "max hold" function.

According to the 070-2184-01 manual, instruments with a serial number below Β070000 are missing the B − (Save A) feature and the corresponding button on the front panel. The military version is called PL-1391/U and is also lacking the B − (Save A) feature.

Specifications

Input frequency 10 Hz – 5 MHz
Drift < 5 Hz/h
Resolution bandwidth 10 Hz – 30 kHz in ×3 / ×10 steps
Sweep rate 10 s/Div to 0.1 ms/Div in 1−2−5 sequence plus Auto
Residual FM < 40 Hzp-p (< 1 Hz from 50 Hz/Div to 2 kHz/Div)
Outputs Horizontal, Video, Calibrator
Input impedance
  • L1 input module: 50 Ω
  • L2 input module: 75 Ω
  • L3 input module: 50 Ω, 600 Ω or 1 MΩ selectable (75 Ω, 600 Ω or 1 MΩ for the L3-1)

Options

No. Log sweep display Tracking generator LED Readout
21
25
28
30
31
32
33

Links

Pictures

7L5 Opt.25 tracking generator plug-in

For internal pictures see the repair section.

Custom ICs used in the 7L5

Page Class Manufacturer Model Part nos Description Designers Used in
155-0035-00 Monolithic integrated circuit Tektronix M053B 155-0035-00 155-0116-00 quad op-amp Mike Metcalf 3110 3S7 3T7 4010 4011 4012 4013 7L5 7L12 7L13 7L14 7L18 7S11 7T11 7S12 S-6 1461 4602 P7001 613 653
155-0056-00 Monolithic integrated circuit Tektronix M042E 155-0056-00 sweep control Val Garuts 26G1 26G2 26G3 314 4701 5B10N 5B12N 7L5 7L12 7L13 7L14 7L18 7S14 5S14N RG501 Telequipment D63 Telequipment DM63
155-0108-00 Monolithic integrated circuit Tektronix 155-0108-00 155-0108-00 operational amplifier 7L5
155-0110-00 Monolithic integrated circuit Tektronix M119 155-0110-00 custom legend generator Mike Metcalf Roger McCoy 7L5
155-0117-00 Monolithic integrated circuit Tektronix M112 155-0117-00 readout control 7L5
155-0118-00 Monolithic integrated circuit Tektronix M115 155-0118-00 vertical control Dave Allstott 7L5
155-0157-00 Monolithic integrated circuit Tektronix M180 155-0157-00 digital storage vertical control Don Kirkpatrick 7L5 7L14 7L18 491 492 492A 492BP 492PGM 494 494A 495 496 497P
155-0158-00 Monolithic integrated circuit Tektronix M181 155-0158-00 digital storage horizontal control Don Kirkpatrick 7L5 7L14 7L18 491 492 492A 492BP 492PGM 494 494A 495 496 497P
155-0198-00 Monolithic integrated circuit Tektronix 155-0198-00 155-0198-00 readout control 7L5
155-0199-00 Monolithic integrated circuit Tektronix 155-0199-00 155-0199-00 vertical control 7L5