TG501

The Tektronix TG501 is a time mark generator plug-in for the TM500 system.

Manuals – Specifications – Links – Pictures

Note the output must be terminated into 50 Ω or there may be no signal at all.

There is also a TG501A.

Specifications

• Markers: 5 s to 1 ns in a 1,2,5 sequence
• Marker Amplitude (into 50 Ω): ≥1 V peak on 5 s through 10 ns; ≥750 mV_p-p on 5 ns and 2 ns; ≥200 mV_p-p on 1 ns
• Trigger Output Signal: Slaved to marker output from 5 s through 100 ns. Remains at 100 ns for all faster markers

Internal Reference	Standard - 1MHZ	Option:1 - 5 MHz
Stability	1E-5	5E-7
Long-Term Drift	1E-5 per month	1E-7 per month
Setability	1E-7	5E-9

• External Reference Input: 1 MHz; 5 MHz; 10 MHz; TTL compatible (Internally hard wired so output frequencies counted down to 1 MHz)
• Error Readout Range: to ±7.5%
• Error Readout accuracy: One digit (±0.1%-points)
• Net Weight: 1 kg
• Dimensions: 66.8 mm × 285.3 mm × 125.9 mm (w/d/h)

Repair Issues

• Check for +15 V and adjust if not between 14.3 V and 15.7 V
• If +5 V is outside 4.94 V − 5.46 V, check U626 (LM741) − old opamps are prone to failure.
• A lot of ICs are placed in non gold plated IC sockets. Contact problems can occur. Removing and inserting ICs helps.
• A1 board should be mounted to frame only with washers inbetween, especially near the rear connector. Shorts to conductor tracks can occur otherwise.

Pictures

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  TG501 Early Version

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  TG501 Late Version

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  TG501A

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  TG501

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  TG501

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  TG501

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  TG501

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  TG501

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  TG501

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  TG501

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  TG501 early version

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  TG501 early version