The Tektronix 7S12 is a Time Domain Reflectometer / Sampler plug-in for 7000-series scopes. It occupies two mainframe plug-in bays (one vertical, one horizontal).
The 7S12 has two bays for S-series plug-in modules ("heads"). The right bay accepts a pulse generator or a trigger recognizer plug-in, whereas the left bay accepts a sampling plug-in.
The typical configuration is to have an S-6 on the left and an S-52 on the right for time domain reflectometry, or a sampling head like the S-4 on the left and an S-53 on the right as a generic sampler.
The 7S12 can also control an optional 7S11 through its left side contacts, adding a second input channel.
Y axis can be scaled in voltage (mV) or distance (ρ) units, X axis in time or distance.
|Sweep modes||Single / Repetitive / Manual / External input|
|With S-6 and S-52||
|Weight||2.13 kg (4.7 lbs)|
- Tektronix 062-1244-00: Time-Domain Reflectometry Measurement Concepts, James A. Strickland, 1969. pages. PDF, OCR, 6.2 MB
- Service Scope No. 45, August 1967 - Time-Domain Reflectometry Theory
- Tek 7S12 @ amplifier.cd
- Tek 7S12 @ barrytech.com
- Evaluation of 7S12 performance (video)
- 7S12 extender board by Dave Partridge
7S12 TDR "self portrait" in 7613 storage mainframe
Left side with cover. Side contacts to interface 7S11 are exposed.
Full pulse pattern of a 7S12/S-52 in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. 7S12 trace at slowest possible sweep.
S-52 pulse in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. Approximately equal time scales.