DC504

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Tektronix DC504
100 MHz, 5-digit frequency counter
Tektronix DC504

Produced from 1975 to 1993

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix DC504 is a 100 MHz, 5-digit frequency counter plug-in for the TM500 system.

The DC504A has 6 digits.

Specifications

Frequency Range 0 Hz (AC coupled: 10 Hz) to at least 80 MHz
Sensitivity (sine wave) 20 mVRMS below 15 MHz, 35 mVRMS to 50 MHz, derated down to 175 mVRMS at 80 MHz
Input impedance 1 MΩ // 20 pF
Trigger Level Range −1.5 V to +1.5 V
Maximum Frequency Resolution kHz ranges: 0.1 Hz; 1 Hz and 10 Hz (7 digit resolution possible in overflow kHz position); MHz ranges: 100 Hz, 1 kHz (9 digit resolution possible in overflow kHz position)
Maximum period resolution ms ranges: 1 µs, 10 µs; s ranges: 10 ms, 1 ms, 0.1 ms
Trigger Error 0.5% of one cycle at min. trigger sensitivity
Display Time Variable ~0.1 s ... ~10 s and HOLD mode
     — Internal Standard Time Base (1 MHz)
Stability 0°C to +50°C after 30 min warm up: 1×10-5
Long Term Drift 1×10-5 per month
Accuracy Adjustable to within 1×10-7
     — Internal Time Base Option 1 (5 MHz)
Stability 0°C to +50°C after 30 min warm up: 1×10-7
Long Term Drift 1×10-7 per month
Accuracy Adjustable to within 5×10-9

Pictures

DC504

DC504A