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DC505A: Difference between revisions
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{{TM500 | mfg=Tektronix | type=DC505A | function=225 MHz counter/timer | class=counter | image=Tek dc505a.jpg | introduced=1976 | discontinued=1981 | | |||
|manuals= | |||
* [[Media:070-1984-00.pdf|Tektronix DC505A Manual]] (OCR) | |||
}} | |||
{{BeginSpecs}} | |||
{{Spec | Frequency range | 0 Hz (DC coupled) / 10 Hz (AC coupled) to 225 MHz }} | |||
{{Spec | Sensitivity | 50 mV<sub>RMS</sub> to 150 MHz, 100 mV<sub>RMS</sub> to 225 MHz (sine) }} | |||
{{Spec | Resolution | 7 digits }} | |||
{{Spec | Gate time | 0.01 s to 10 s in decade steps }} | |||
{{Spec | Stability | Standard: 1×10<sup>−5</sup>; Opt.1: 5×10<sup>−7</sup> (0°C to +50°C, after 30 min warm-up) }} | |||
{{Spec | Long-term drift | Standard: 1×10<sup>−5</sup> per month; Opt.1: 5×10<sup>−7</sup> per month }} | |||
{{Spec | Features | | |||
* Two input channels (BNC connectors) | |||
* Functions: Frequency, frequency ratio, period, interval, pulse width, events | |||
}} | |||
{{Spec | Options | | |||
* Opt.1: 5 MHz TCXO (with ÷5 divider) | |||
* Opt.4: Decimal point output on rear interface (for use with [[153]] interface) | |||
}} | |||
{{EndSpecs}} | |||
==Links== | |||
{{Documents|Link=DC505A}} | |||
==Rear Interface== | |||
<small> | |||
{| class="wikitable" | |||
|- | |||
! Connector Pin | |||
! Signal | |||
! Connector Pin | |||
! Signal | |||
|- | |||
| 27B || DP5 (Opt.4 only) || 27A || Internal Scan Clock Disable | |||
|- | |||
| 26B || Manual Start-Stop || 26A || /RESET | |||
|- | |||
| 25B || Internal Scan Clock Out || 25A || Time Slot Zero | |||
|- | |||
| 24B || Internal Scan Clock Out || || | |||
|- | |||
| 23B || Overflow || || | |||
|- | |||
| || || 22A || Trig Level Out | |||
|- | |||
| 21B || BCD output 2 || || | |||
|- | |||
| 20B || BCD output 8 || 20A || BCD output 4 | |||
|- | |||
| 19B || Data Good || 19A || BCD output 1 | |||
|- | |||
| 18B || DP4 (Opt.4 only) || || | |||
|- | |||
| 17B || Ch B Input || 17A || Ch A GND | |||
|- | |||
| 16B || Ch B GND || 16A || Ch A Input | |||
|- | |||
| 15B || DP3 (Opt.4 only) || 15A || DP1 (Opt.4 only) | |||
|- | |||
| 14B || DP2 (Opt.4 only) || 14A || Ext Clock Input / 1 MHz Out | |||
|} | |||
</small> | |||
Data is output serially by digit. | |||
==Pictures== | |||
<gallery> | |||
Tek dc505a.jpg | DC505A | |||
</gallery> | |||
==Components== | |||
{{Parts|DC505}} | |||
{{Parts|DC505A}} | |||