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TG501: Difference between revisions
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==Specifications== | ==Specifications== | ||
* Markers: 5 s to 1 ns in a 1,2,5 sequence | * Markers: 5 s to 1 ns in a 1,2,5 sequence | ||
* Marker Amplitude: | * Marker Amplitude (into 50 Ω): ≥1 V peak on 5 s through 10 ns; ≥750 mV<sub>p-p</sub> on 5 ns and 2 ns; ≥200 mV<sub>p-p</sub> on 1 ns | ||
*Trigger Output Signal: Slaved to marker output from 5 s through 100 ns . Remains at 100 ns for all faster markers | * Trigger Output Signal: Slaved to marker output from 5 s through 100 ns. Remains at 100 ns for all faster markers | ||
{| class="wikitable" | :{| class="wikitable" | ||
! Internal Reference !! Standard - 1MHZ !! Option:1 - 5 MHz | ! Internal Reference !! Standard - 1MHZ !! Option:1 - 5 MHz | ||
|- | |- | ||
| Line 22: | Line 22: | ||
| Setability || 1E-7 || 5E-9 | | 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) | * 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 | * Error Readout Range: to ±7.5% | ||
* Error Readout accuracy: One digit (±0 | * Error Readout accuracy: One digit (±0.1%-points) | ||
* Net Weight: 1 kg | * Net Weight: 1 kg | ||
* Dimensions: 66 | * Dimensions: 66.8 mm × 285.3 mm (d/T) × 125.9 mm (w/d/h) | ||
==Repair Issues== | ==Repair Issues== | ||
* Check for + | * Check for +15 V and adjust if not between 14.3 V and 15.7 V | ||
* If + | * 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 | * 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== | ==Pictures== | ||