Equipment information:

Precision Electronics 251A Signal Analyzer
Manufacturer:
Precision Electronics
Model: 251A
Date:
Category: Measurement instruments
Group: Signal Analyzer
Description: Signal Tracer
Information:
                                    Model 251A Deluxe Signal Tracer

Reference Data,

Power requirements.
105-125v AC	cps,

Power consumption 55 watts.

Isolation

1. Specially designed electrostatically shielded power
transformer isolates unit from AC line for safe use on AC-DC
equipment,

C.	Input impedance,

1.	Probe is 4. megohms shunted by 2mmf. at low frequenoie
The input resistance decreases with increasing frequen cy
caused by dielectric losses.

2,	Audio input impedance is £ meg. on xlOO position, and .25
meg, on xl,

D,	Frequency response,

1.	Probe from 20 cps, to over JOOmc,

Note: When probe is used on audio frequencies a slight
signal distortion in speaker is normal.

2.	Audio inputs from 20 cps. to over 20,000 cps.

E* Rosponse characteristics.

1.	Audio input to meter xl position flat within ,1 of on*
db. from $0 cps. to 20,000 cps,

2.	In xlOO position plus or minus db. from 50 ops • to
10,000 cps,

5. Probe flat within 1 db. from 20,000 cps. to 100 me.
approx. Above 100 me. the curve depends on the resonance of
the ground lead circuit tuned by its length,

F.	Sensitivity,

1.	Probe is li microvolts for full scale deflection,


G.	Tvtbe complement.

1.	6AQ6/6AT6 high gain triode in probe, 6SJ7 pentode
amplifier, 6k6gT power output, 0SN7OT VTVM, 0X5GT reotifier,

2.	Standard tubes may be used for replacement.

These manuals are available for the above equipment:

Precision Electronics -- 251A -- Service and User Manual
File name: PrecisionElectronics-6584-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 17
Size: 960.99 Kbytes (984056 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: 7c7321b9774a8a9dbae11fcd07640e26
ed2kID: 5c1c1e1e01eebfca54f34f028bcc326c
Downloads: 58 since 07 March 2015
Information:
PrecisionElectronics-6584-Manual-Page-1-Picture
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