Equipment information:

Hewlett Packard 5061A Generator
Hewlett Packard
Model: 5061A
Date: 1968
Category: Measurement instruments
Group: Generator
Description: Cesium Beam Frequency Standard
                                    The Hewlett-Packard Model 5061A Cesium Beam Frequency
Standard is a compact, self-contained frequency standard
which uses a cesium beam tube resonator to stabilize the
output frequency of a quartz crystal oscillator. Solid-state
components and the closed-loop, self-checking control
circuit provide an accuracy of ± 1 part in lO00000000000.
Output frequencies are 5 MHz, 1 MHz, 100 kHz, and 100 kHz
signal for applications such as use with a HP Model 115BR/CR
Frequency Divider and Digital Clock. Atomic or UT2
(UTC) time reference is available with the 5061A.
The time scale is easily changed by setting a four
thumbwheel switch and a slide switch.

these manuals are available for the above equipment:

Manual Type: User Manual with schematics HewlettPackard-3900-Manual-Page-1-Picture
Pages: 104
Size: 12.73 Mbytes (13348695 Bytes)
Language: english
Manual-ID/Number: 05061-99001
Date: March 1968
Quality: Scanned document, all readable.
Upload date:
MD5: 8c15725331c415b8a85e635ac0485682
Downloads: 215 since 09 January 2013
Preliminary Operation and Schematics

Manual Type: Service and User Manual HewlettPackard-4905-Manual-Page-1-Picture
Pages: 329
Size: 23.74 Mbytes (24894209 Bytes)
Language: english
Manual-ID/Number: 05061-9052
Date: June 1978
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: b0fe5d4502f41ae377eb16afb755e8df
Downloads: 224 since 24 November 2013
This manual applies directly to HP Model 5061A Cesium Beam
Frequency Standards having Serial Prefix 1720A.


For Serial Prefixes above 1740A, a “Manual Changes” sheet is
included with this manual. For Serial Prefix below this
number, refer to Section VII for manual changes.
This manual applies directly to Model 5061A instruments with
Option 001 (Time Standard), Option 002 (Standby Power
Supply), Option 003 (Time Standard and Standby Power Supply
options combined), and Option 004 (High Performance Beam Tube).

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