575B & 578B
End of Life Notice:
This product is no longer orderable.
The 575B and 578B CW frequency counters are distinguished by their fully automatic source-locking capability. Virtually any electronically tunable frequency source can be locked to the same accuracy and long-term stability as the time base oscillators inside the 575B and 578B. The ability of these counters to accurately set and stabilize the frequency of a basic frequency source can many times save the expense of a synthesized signal generator. The locked frequency is settable in 10 kHz increments from 10 MHz to the maximum frequency of the counter. The 20 GHz 575B and the 26.5 GHz 578B (110 GHz optional) are fully programmable via GPIB thereby making the locked source an easily integrated par of an ATE system. |
![]() All Phase Matrix EIP® brand frequency counters are based on a unique heterodyne architecture that incorporates a YIG-based preselector. The YIG-preselected input provides unparalleled performance, in amplitude discrimination, frequency selectivity, kickback noise, and burnout protection. |
• Source Locking (from 10 MHz to as high as the counter's max. frequency)
• -30 dBm sensitivity
• Power Measurements to ±0.5 dB Resolution
• Optional Frequency Extension to 110 GHz (578B Only)
• Laser frequency control
Accessories
End of Life Notice:
This product is no longer orderable.
Part Number![]() |
Description | Documentation | Image |
M575B-ACC101 M578B-ACC101 |
24" Chassis Slide Kit w/Handles | Datasheet![]() |
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M575B-ACC102 M578B-ACC102 |
24" chassis slide kit w/o handles | Datasheet![]() |
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M575B-ACC020 M578B-ACC020 |
Rack-mount kit w/handles | Datasheet![]() |
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M575B-ACC022 M578B-ACC022 |
Rack-mount kit w/o handles | Datasheet![]() |
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M575B-ACC010 M578B-ACC010 |
Transit Case | None | ![]() |
M575B-ACC050 M578B-ACC050 |
Canvas Carrying Case | None | ![]() |
M575B-ACC031 M578B-ACC031 |
Operation Manual | None | ![]() |
M575B-ACC032 M578B-ACC032 |
Service Manual | None | ![]() |
M575B-ACC040 M578B-ACC040 |
Service Kit | None | ![]() |
M578B-ACC590 | Frequency Extension Cable Kit | None | ![]() |
M578B-ACC091 | 26.5 to 40 GHz remote sensor | None | ![]() |
M578B-ACC092 | 40 to 90 GHz remote sensor | None | ![]() |
M578B-ACC093 | 60 to 90 GHz remote sensor | None | ![]() |
M578B-ACC094 | 90 to 110 GHz remote sensor | None | ![]() |
M578B-ACC095 | 50 to 75 GHz remote sensor | None | ![]() |
M578B-ACC097 | 26.5 to 50 GHz remote sensor (coaxial) | None | ![]() |
Documentation
End of Life Notice:
This product is no longer orderable.
Application Note: Using the 575B/578B Counter With the HP 8350A/B
Ordering Information
End of Life Notice:
This product is no longer orderable.
Models | 575B | 10 Hz to 20 GHz source-locking frequency counter |
578B | 10 Hz to 26.5 GHz source-locking frequency counter | |
Options | 01 | Digital-to-analog converter |
02 | Power measurement | |
05 | High-stability ovenized time base | |
06 | Frequency extension to 110 GHz (578B only) | |
09 | Rear panel signal input | |
14 | Two-year warranty extension (for total of three years) | |
15 | ANSI/NCSL Z540 Standard data & certificate | |
Accessories | M575B-ACC101 M578B-ACC101 |
Kit, 24" chassis slide w/handles |
M575B-ACC102 M578B-ACC102 |
Kit, 24" chassis slide w/o handles | |
M575B-ACC020 M578B-ACC020 |
Kit, rack-mount w/handles | |
M575B-ACC022 M578B-ACC022 |
Kit, rack-mount w/o handles | |
M575B-ACC010 M578B-ACC010 |
Case, trunk-style | |
M575B-ACC050 M578B-ACC050 |
Case, canvas-style | |
M575B-ACC031 M578B-ACC031 |
Manual, operation (extra hardcopy in addition to the one that ships with a new unit) | |
M575B-ACC032 M578B-ACC032 |
Manual, service (hardcopy) | |
M575B-ACC040 M578B-ACC040 |
Kit, service | |
M578B-ACC590 | Kit, frequency-extenstion cable | |
M578B-ACC091 | Remote sensor, 26.5 to 40 GHz | |
M578B-ACC092 | Remote sensor, 40 to 90 GHz | |
M578B-ACC093 | Remote sensor, 50 to 90 GHz | |
M578B-ACC094 | Remote sensor, 90 to 110 GHz | |
M578B-ACC095 | Remote sensor, 50 to 75 GHz | |
M578B-ACC097 | Remote sensor, 26.5 to 50 GHz (coaxial) |