Topics covered (in various levels of detail):
Test pattern generator
Television up converters
Vestigial sidebands
Double sidebands
Television IFs (Intermediate Frequency)
Vision modulation depth
Sound modulation depth
Pedestal clamp
White clipper
Sync stretcher
Group delay

TV equipment demonstrated:
Philips PM5644 (Pattern Generator)
Philips PM5680 (IF Modulator)
Eiden 4220C006 (Up converter)
Labgear MOD111 (Consumer modulator)

Test equipment:
Tektronix TDS3000 (Oscilloscope)
Agilent ESAE E4404B (Spectrum Analyser)
Agilent 8753ES (Network Analyser)

Related links:
EEVBlog teardown of another PAL broadcast modulator (NEC):    • EEVblog #574  NEC Analog TV IF Modul...  
PM5680 brochure: https://www.donatronix.com/pdf/121624...