545B & 548B
End of Life Notice:
This product is no longer orderable.
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The 545B and 548B frequency counters are popular in R&D labs and production test settings because they perform multiple duties and a variety of applications. They provide the capability to selectively measure individual signals in a multi-signal environment. Additionally, they can simultaneously measure the average power level of the isolated input signal. The 545B measures CW, FM, and AM frequencies from 10 Hz to 20 GHz, and the 548B extends the range to 26.5 GHz. Optionally, the 548B's range can be further extended to 110 GHz. |
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. |
• Frequency Limits for Selective Frequency and Power Measurements
• -30 dBm sensitivity
• Power Measurements to ±0.1 dB Resolution
• Optional Frequency Extension to 110 GHz (548B Only)
• 10 dB automatic amplitude discrimination
Accessories
End of Life Notice:
This product is no longer orderable.
Part Number |
Description | Documentation | Image |
| M545B-ACC101 M548B-ACC101 |
24" Chassis Slide Kit w/Handles | Datasheet |
 |
| M545B-ACC102 M548B-ACC102 |
24" chassis slide kit w/o handles | Datasheet |
 |
| M545B-ACC020 M548B-ACC020 |
Rack-mount kit w/handles | Datasheet |
 |
| M545B-ACC022 M548B-ACC022 |
Rack-mount kit w/o handles | Datasheet |
 |
| M545B-ACC010 M548B-ACC010 |
Transit Case | None |  |
| M545B-ACC050 M548B-ACC050 |
Canvass Carrying Case | None |  |
| M545B-ACC031 M548B-ACC031 |
Operation Manual | None |  |
| M545B-ACC032 M548B-ACC032 |
Service Manual | None | |
| M545B-ACC040 M548B-ACC040 |
Service Kit | None |  |
| M548B-ACC590 | Frequency Extension Cable Kit | None |  |
| M548B-ACC091 | 26.5 to 40 GHz remote sensor | None |  |
| M548B-ACC092 | 40 to 60 GHz remote sensor | None |  |
| M548B-ACC093 | 60 to 90 GHz remote sensor | None |  |
| M548B-ACC094 | 90 to 110 GHz remote sensor | None | |
| M548B-ACC095 | 50 to 75 GHz remote sensor | None |  |
| M548B-ACC097 | 26.5 to 50 GHz remote sensor (coaxial) | None |  |
Documentation
End of Life Notice:
This product is no longer orderable.
Application Note: Automated Frequency Measurement of Millimeter Waves
Ordering Information
End of Life Notice:
This product is no longer orderable.
| Models | 545B | 10 Hz to 20 GHz frequency counter |
| 548B | 10 Hz to 26.5 GHz frequency counter | |
| Options | 01 | Digital-to-analog converter |
| 02 | Power measurement | |
| 05 | High-stability ovenized time base | |
| 06 | Frequency extension to 110 GHz (548B only) | |
| 09 | Rear panel signal input | |
| 14 | Two-year warranty extension (for total of three years) | |
| 15 | ANSI/NCSL Z540 Standard data & certificate | |
| Accessories | M545B-ACC101 M548B-ACC101 |
Kit, 24" chassis slide w/handles |
| M545B-ACC102 M548B-ACC102 |
Kit, 24" chassis slide w/o handles | |
| M545B-ACC020 M548B-ACC020 |
Kit, rack-mount w/handles | |
| M545B-ACC022 M548B-ACC022 |
Kit, rack-mount w/o handles | |
| M545B-ACC010 M548B-ACC010 |
Case, trunk-style | |
| M545B-ACC050 M548B-ACC050 |
Case, canvas-style | |
| M545B-ACC031 M548B-ACC031 |
Manual, operation (extra hardcopy in addition to the one that ships with a new unit) | |
| M545B-ACC032 M548B-ACC032 |
Manual, service (hardcopy) | |
| M545B-ACC040 M548B-ACC040 |
Kit, service | |
| M548B-ACC590 | Kit, frequency-extenstion cable | |
| M548B-ACC091 | Remote sensor, 26.5 to 40 GHz | |
| M548B-ACC092 | Remote sensor, 40 to 90 GHz | |
| M548B-ACC093 | Remote sensor, 50 to 90 GHz | |
| M548B-ACC094 | Remote sensor, 90 to 110 GHz | |
| M548B-ACC095 | Remote sensor, 50 to 75 GHz | |
| M548B-ACC097 | Remote sensor, 26.5 to 50 GHz (coaxial) |