PG501

The Tektronix PG501 is a 50 MHz pulse generator plug-in for the TM500 system.

Tektronix PG501
50 MHz pulse generator Tektronix PG501 Produced from 1972 to 1993 Manuals PG501 Instruction Manual (OCR) PG501 Stitched Diagrams (All manuals in PDF format unless noted otherwise)

Key Specifications

Outputs	simultaneous positive and negative output pulses, fixed 5 ns rise/fall times, independently variable amplitudes from 0.5 V to 5 V into 50 Ω
Pulse period	20 ns to 20 ms calibrated, 1:10 variable to 200 ms, or externally triggered
Pulse duration	10 ns to 10 ms calibrated, 1:10 variable to 100 ms, external duration, or "locked on" to adjust output voltage
Trigger input	≥+1 V High, ≤0.1 V low; max. +5 V DC+peak AC; min. 10 ns on/off; triggers duration generator in Ext Trig mode, controls output in Ext Duration mode
Pre-trigger output	8 ns before main output, 1 V into 50 Ω

27B, 28A (GND 27A, 28B) – pre-trigger output, 10 ns before main output, 1 V from 27 Ω source impedance
25A (GND 26A) – averaged amplitude output, internally connected to +out or -out via 27 kΩ/20 nF, or disconnected
24B (GND 25B) – available to connect in parallel to front panel Trig/Duration Input (connecting cable to be user-installed)

The PG501 uses discrete transistors except for a single MC10105L ECL integrated circuit.