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Phase Matrix, Inc.
545B
Instruments You Can Count On
Full Function CW Microwave
Frequency Counters with
Selective Power
Measurement
548B
Phase Matrix, Inc.
EIP 545B and 548B
CW Frequency Counters
• Keyboard controlled frequency limit selection
• Power Measurement to 0.1 dB resolution
• Power Measurement accuracy to ±0.5 dB typical
• -30 dBm sensitivity
• 200 Watt (+53 dBm) peak damage protection
• 10 dB automatic amplitude discrimination
• 200msec acquisition time
• Up to 800 MHz/sec tracking speed
• 20MHz P-P FM tolerance up to a 10 MHz rate
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Phase Matrix / EIP 545B and 548B. . . .
Full Function Microwave Frequency Counters
The Ideal Benchtop Counters
The combination of accuracy, simple operation, and the widest range of standard
features and options available ina microwave counter makes the 545B/548B family
the best choice for your R&D lab or production test bench. Wherever a microwave
counter has multiple duties and a variety of applications to meet, only a full function counter with YIG-tuned preselection can provide the capabilities that you
need.
The 545B measures CW, FM and AM frequencies from 10 Hz to 20 GHz, and the
548B extends that range up to 26.5 GHz. With simultaneous power measurement
capability, and options for a high stability time base, these high performance
counters are ideally suited for applications in:
• Carrier signal measurement
• Transmitter frequency verification
• Channel specific signal measurements
• Production Line testing
• R&D Labs
• ATE
Only Phase Matrix counters offer the unique
YIG-preselected heterodyne technique.
Unsurpassed Burnout Protection
Typically found in high performance spectrum analyzers; only Phase Matrix
counters feature a YIG-preselected microwave input, which provides unparralled
burnout protection, FM tolerance and frequency selectivity. The YIG preselector
works like a tunable bandpass filter, preventing harmonics and other out-of-band
spurious signals from interfering with measurement of the desired signal. It also
protects the counter from accidental application of high level signals (up to 200
watts peak), reducing downtime and the associated high cost of repairing
damaged microwave circuitry.
Selective Frequency and Power Measurements
With a single connection, the 545B and 548B can simultaneously measure and
display the input signals frequency and power level in the microwave band,
eliminating the need for a seperate microwave power meter. Within the 25MHz
bandwidth of the YIG-preselector, only the selected signals frequency and power
level are measured. Signals to be analyzed are selected by keystroke entry of an
individual center frequency, or search a range between a low and high frquency
limit. This signal selectivity, combined with 20MHz of FM tolerance at all rates up to
10MHz, allows the 545B and the 548B to make accurate frequency and power level
measurements even while the input signal is carrying traffic; there is no need to
take the transmitter, or adjacent channels, off the air for routine checks.
RF Input
950MHz to
26.5 GHz
YIG Filter
BW=25MHz
All Phase Matrix Counters feature the unique
YIG Preselected Heterodyne Down-Convertor.
MIXER
SRD
L.O.
IF to Count
Circuitry
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