25B & 28B
End of Life Notice:
This product is no longer orderable.
The 25B and 28B CW frequency counters are ideal for communications applications. These portable, rugged, all-die-cast-body units combine durability and small size with high-performance features typically found in larger, benchtop instruments. The 25B measures CW, FM, AM as well as complex modulated frequencies from 10 to 20 GHz, and the 28B extends the range up to 26.5 GHz. • Carrier Signal Measurement |
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Accessories
End of Life Notice:
This product is no longer orderable.
Part Number![]() |
Description | Documentation | Image |
M25B-ACC011 M28B-ACC011 |
Rack mount kit for 1 unit w/o handles | Datasheet![]() |
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M25B-ACC012 M28B-ACC012 |
Rack mount kit for 2 side-by-side units (Agilent compatible) | Datasheet![]() |
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M25B-ACC016 M28B-ACC016 |
Chassis slide and rack mount kit for 1 unit | Datasheet![]() |
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M25B-ACC018 M28B-ACC018 |
Front panel handle kit (not compatible w/accessories 011, 012, 015, or 017) | None | ![]() |
M25B-ACC021 M28B-ACC021 |
Trunk-style transit case | None | ![]() |
M25B-ACC051 M28B-ACC051 |
Canvass case | None | ![]() |
M25B-ACC031 M28B-ACC031 |
Operation manual | None | ![]() |
M25B-ACC032 M28B-ACC032 |
Service manual | None | ![]() |
M25B-ACC042 M28B-ACC042 |
Service kit | None | ![]() |
Ordering Information
End of Life Notice:
This product is no longer orderable.
Models | 25B | 10 Hz to 20 GHz frequency counter |
28B | 10 Hz to 26.5 GHz frequency counter | |
Options | 05 | High-stability ovenized time base |
14 | Two-year warranty extension (for total of three years) | |
15 | ANSI/NCSL Z540 Standard data & certificate | |
Accessories | M25B-ACC011 M28B-ACC011 |
Kit, rack-mount, without handles |
M25B-ACC012 M28B-ACC012 |
Kit, rack-mount for 2 side-by-side units (Agilent compatible) | |
M25B-ACC016 M28B-ACC016 |
Kit, chassis slide rack-mount for 1 unit | |
M25B-ACC018 M28B-ACC018 |
Kit, front-panel handle (not compatible w/accessories 011, 012, 015, or 017) | |
M25B-ACC021 M28B-ACC021 |
Case, trunk-style | |
M25B-ACC051 M28B-ACC051 |
Case, canvas-style | |
M25B-ACC031 M28B-ACC031 |
Manual, operation (extra hardcopy in addition to the one that ships with a new unit) | |
M25B-ACC032 M28B-ACC032 |
Manual, service (hardcopy) | |
M25B-ACC042 M28B-ACC042 |
Kit, service |