Gigatronics 8541C Data Sheet

8540C
SERIES
UNIVERSAL
POWER
METER

Page 1 of 6

The Giga-tronics 8540C Series combines the speed, range, and capabilities needed to test today’s sophisticated communications systems.

The Giga-tronics 8540C
Series Universal Power
Meters combine accuracy,
speed, range and measure­ment capabilities unavailable
from any other power meter.

Built-in features such as
power sweep calibration and
frequency calibration provide
an unequalled degree of
measurement accuracy.

Only the 8540C Series
power meters have the speed
and range to meet the
throughput demands of high
volume manufacturing.

And the meters can meas­ure the CW, peak and true
average power of the com­plex modulated signals used
in EW, radar, and communic­ations systems.

TESTING
COMMUNICATIONS
SYSTEMS

Only the Giga-tronics 8540C
Series Universal Power
Meters have the extensive
measurement capabilities
required for today’s sophisti­cated communications appli­cations.

TDMA

The 8540C can automatically
measure the average power
of pulse modulated signals or
pulse signals that are ampli­tude modulated during the
pulse ‘on’ period — such as
TDMA (time division multiple
access) signals.

And the exclusive burst

start exclude and burst end

exclude capabilities of the
8540C allow you to exclude
the beginning or end of a
burst when measuring the
average burst power. Masking
the beginning or end of a
burst signal, in order to
exclude overshoot or other
distortions, can be desirable
or even required for certain
types of measurements.

GSM, NADC AND PDC

The exclusive Time Gating
feature of the 8540C lets you
program a measurement start
time and duration to measure
the average power during a
specific time slot of a burst
signal. This is critical for accu­rately measuring the average
power of GSM, NADC and

Giga-tronics 8540C Series Universal Power Meters Page 2 of 6

ment capability of the 8540C
is a result of the advanced
meter architecture combined
with a family of interchange­able sensors. The sensors
provide different power mea­surement functions — CW,
peak and modulated — over
a wide dynamic range at fast
measurement speeds.

And no power meter is as
accurate as the 8540C over
the wide dynamic range
needed for CDMA testing.

SPEED TO BURN

Fast responding diode sen­sors plus innovative digital sig­nal processing deliver high­speed measurements.

Achieve 500 readings per
second over GPIB. Or use
our exclusive fast buffered
mode to further reduce
processor overhead and cap­ture up to 4,000 readings per
second in CW mode.

The 8540C also responds
much faster to power level
changes than meters using
thermocouple sensors. This
adds up to a huge reduction
in test time and a significant
increase in manufacturing
throughput.

PEAK POWER
MEASUREMENT

You can also measure the
instantaneous peak power
level of a pulse modulated
signal just by changing sen­sors. Use the ‘sample delay’
function of the 8540C to set
the desired measurement
point on the waveform. An
external oscilloscope can be
used to view the pulse profile
and corresponding measure­ment point.

The extensive measure-

other formats that must con­trol the power trajectory
during a specified portion of
the burst.

PHS

PHS (as well as DECT and
CT-2) systems use a variation
of the TDMA format. Instead
of using different frequency
channels for the forward and
reverse link, these systems
use a Time Domain Duplex
(TDD) method at the same
frequency.

The Time Gating feature of
the 8540C can be used in all
of the average power mea­surement modes to accurate­ly measure the average power
of the multiplexed time slots.

CDMA

The 8540C has the speed,
accuracy and range to accu­rately measure the power
level of CDMA (code division
multiple access) signals for
open-loop and closed-loop
testing.

The wide dynamic range of
the 8540C is ideal for open­loop tests, which can require
power verification over an 80
dB range. Because the 8540C
can achieve fast measurement
speeds over the GPIB bus,
you can quickly measure
power in1dB steps over the
48 dB range required for
closed-loop tests.

Giga-tronics 8540C Series Universal Power Meters Page 3 of 6

Giga-tronics uses diode sensors exclusively to
provide speed, range, capability and accuracy
unavailable from any other power meter.

ACCURACY OVER A 90 dB RANGE

Giga-tronics has solved the challenge that pre­viously limited the use of diode sensors to
below –20 dBm — the ‘square law’ region —
by utilizing a built-in power sweep calibration
system.

The power sweep calibrator uses a 50 MHz
amplitude controlled oscillator to step from

–30 to +20 dBm in 1 dB increments. Each step is set using an internal
thermistor — the standard for accuracy and traceability. You get ther­mistor accuracy, plus diode speed and dynamic range, for measuring
signals accurately over a full 90 dB power range.

THE FASTEST CW MEASUREMENTS

Giga-tronics 80300A Series CW Power Sensors let you measure CW
power from10 MHz to 40 GHz at speeds up to 500 readings per sec­ond over GPIB.

Measure up to 90 dB with a single sensor, and select from a variety

of high power sensors, up to 50 W.

PEAK POWER MEASUREMENTS

Attach a Giga-tronics 80350A Series Peak Power Sensor to an 8540C
meter and directly measure the instantaneous peak power level of a
pulse modulated signal.

Use the ‘sample delay’ function to set the desired measurement
point on the waveform. An external scope can be used to view the
profile and see the exact measurement point on the pulse.

TRUE AVERAGE POWER MEASUREMENTS

The Giga-tronics 80400A Series Modulated Power Sensors let you
measure the true average power of amplitude modulated, burst modu­lated and other complex modulated signals — such as TDMA signals
— at modulation bandwidths up to 40 kHz.

When greater bandwidth is needed — for formats such as CDMA
and PHS — Giga-tronics 80600A Series Modulated Power Sensors
provide bandwidth up to 1.5 MHz to measure the true average power
of complex modulated signals.

Giga-tronics 80400A and 80600A Series Modulated Power Sensors
can accurately and directly measure signals over a dynamic range up
to 87 dB and at power levels up to 50 W.

BUILT-IN FREQUENCY RESPONSE CALIBRATION

Configuring the power meter for measurements is easy with
calibration factors programmed into the sensor.

When the measurement frequency is entered, the meter automatic­ally applies the correct calibration factor from the sensor EEPROM.
And the meter automatically reads a new set of cal factors whenever
a sensor is changed.

This avoids the chance of measurement error from using invalid cali­bration factors when you change sensors, or from forgetting to enter
new calibration factors. You not only avoid measurement errors; you
also save yourself test time.

The Accuracy Audit table lists the significant uncertainties
of an absolute power measurement. The accuracy of the
8540C combined with the 80301A sensor is compared to a
typical thermocouple sensor/meter combination at +20 dBm,
0 dBm, and –30 dBm (the dynamic limit of the thermocouple
sensor). The uncertainty comparison at –30 dBm illustrates
the accuracy advantage of a wide dynamic sensor, even
when the full 90 dB dynamic range is not utilized.

+20 dBm

8540C Typical

Frequency = 1 GHz; Source with

Thermocouple

Match = 1.5:1 80301A Meter/Sensor

Instrumentation Uncertainty ± 5.2% + 2.5% – 4.5%
Sensor Power Linearity (>8 GHz)

±0% ±0%
Calibrator Uncertainty ± 1.2% ± 1.2%
Calibrator/Sensor Mismatch ± 0.28% ± 0.23%
Calibration Factor Uncertainty ± 1.04% ± 1.6%
Zero Error ± 0.00000005% ± 0.00005%
Noise ± 0.00000005% ± 0.00005%
Mismatch (Sensor/Source) ± 2.25% ± 2.0%

% Total Uncertainty ± 9.97% + 7.53 – 9.53%

dB Total Uncertainty ± 0.41 dB + 0.316 – 0.4 dB

0 dBm 8540C Typical
Frequency = 1 GHz; Source with

Thermocouple

Match = 1.5:1 80301A Meter/Sensor

Instrumentation Uncertainty

±

0% ± 0.5%

Sensor Power Linearity (>8 GHz)

±0%

±

0%
Calibrator Uncertainty ± 1.2% ± 1.2%
Calibrator/Sensor Mismatch ± 0.28% ± 0.23%
Calibration Factor Uncertainty ± 1.04% ± 1.6%
Zero Error ± 0.000005% ± 0.005%
Noise ± 0.000005% ± 0.005%
Mismatch (Sensor/Source) ± 2.25% ± 2.0%

% Total Uncertainty ± 4.77% ± 5.54%

dB Total Uncertainty ± 0.20 dB ± 0.23 dB

–30 dBm 8540C Typical
Frequency = 1 GHz; Source with

Thermocouple

Match = 1.5:1 80301A Meter/Sensor

Instrumentation Uncertainty

±

0.925% ± 0.5%

Sensor Power Linearity (>8 GHz)

±0%

±

0%
Calibrator Uncertainty ± 1.2% ± 1.2%
Calibrator/Sensor Mismatch ± 0.28% ± 0.23%
Calibration Factor Uncertainty ± 1.04% ± 1.6%
Zero Error ± 0.005% ± 5%
Noise ± 0.005% ± 5%
Mismatch (Sensor/Source) ± 2.25% ± 2.0%

% Total Uncertainty ± 5.71% ± 15.53%

dB Total Uncertainty ± 0.24 dB ± 0.63 dB

Accuracy Audit

Frequency Range/ Maximum Power Linearity

4

Power Range Power (Frequency > 8 GHz) RF Connector Length Diameter Weight VSWR

200 mW CW Power Sensors

80301A 10 MHz to 18 GHz +23 dBm (200 mW)–70 to –20 dBm: ±0.00 dB Type N(m) 114.5 mm 32 mm 0.18 kg 1.12: 0.01 - 2 GHz

–

70 to +20 dBm

–

20 to +20 dBm: ±0.05 dB/10 dB 50Ω (4.5 in) (1.25 in) (0.4 lb) 1.22: 2 - 12.4 GHz

80302A 10 MHz to 18 GHz +23 dBm (200 mW)–70 to –20 dBm: ±0.00 dB APC-7 114.5 mm 32 mm 0.18 kg 1.29: 12.4 - 18 GHz

–

70 to +20 dBm

–

20 to +20 dBm: ±0.05 dB/10 dB 50Ω (4.5 in) (1.25 in) (0.4 lb)

80303A 10 MHz to 26.5 GHz +23 dBm (200 mW)–70 to –20 dBm: ±0.00 dB Type K(m)

1

114.5 mm 32 mm 0.18 kg 1.12: 0.01 - 2 GHz

–

70 to +20 dBm

–

20 to +20 dBm: ±0.1 dB/10 dB 50Ω (4.5 in) (1.25 in) (0.4 lb) 1.22: 2 - 12.4 GHz

80304A 10 MHz to 40 GHz +23 dBm (200 mW)–70 to –20 dBm: ±0.00 dB Type K(m)

1

114.5 mm 32 mm 0.18 kg 1.38: 12.4 - 18 GHz

–

70 to 0 dBm

–

20 to 0 dBm: ±0.2 dB/10 dB 50Ω (4.5 in) (1.25 in) (0.4 lb) 1.43: 18 - 26.5 GHz

1.92: 26.5 - 40 GHz

Low VSWR CW Power Sensors

80310A 10 MHz to 18 GHz +29 dBm (800 mW)–64 to –14 dBm: ±0.00 dB Type K(m)

1

127 mm 32 mm 0.23 kg 1.13: 0.01 - 2 GHz

–

64 to +26 dBm

–

14 to +26 dBm: ±0.05 dB/10 dB 50Ω (5.0 in) (1.25 in) (0.5 lb) 1.16: 2 - 12 GHz

80313A 10 MHz to 26.5 GHz +29 dBm (800 mW)–64 to –14 dBm: ±0.00 dB 1.23: 12 - 18 GHz

–

64 to +26 dBm

–

14 to +26 dBm: ±0.1 dB/10 dB 1.29: 18 - 26.5 GHz

80314A 10 MHz to 40 GHz +29 dBm (800 mW)–64 to –14 dBm: ±0.00 dB 1.50: 26.5 - 40 GHz

–

64 to +6 dBm

–

14 to +6dBm: ±0.2 dB/10 dB

1 W CW Power Sensors

80320A 10 MHz to 18 GHz +30 dBm (1 W)

–

60 to –10 dBm:±0.00 dB Type K(m)

1

127 mm 32 mm 0.23 kg 1.11: 0.01 - 2 GHz

–

60 to +30 dBm

–

10 to +30 dBm: ±0.05 dB/10 dB 50Ω (5.0 in) (1.25 in) (0.5 lb) 1.12: 2 - 12 GHz

80323A 10 MHz to 26.5 GHz +30 dBm (1 W)

–

60 to –10 dBm: ±0.00 dB 1.18: 12 - 18 GHz

–

60 to +30 dBm

–

10 to +30 dBm: ±0.1 dB/10 dB 1.22: 18 - 26.5 GHz

80324A 10 MHz to 40 GHz +30 dBm (1 W)

–

60 to –10 dBm: ±0.00 dB 1.36: 26.5 - 40 GHz

–

60 to +10 dBm

–

10 to +10 dBm: ±0.2 dB/10 dB

5 W CW Power Sensor

2

80321A 10 MHz to 18 GHz +37 dBm (5 W)

–

50 to 0 dBm: ±0.00 dB Type N(m) 150 mm 32 mm 0.23 kg 1.20: 0.01 - 6 GHz

–

50 to +37 dBm 0 to +37 dBm: ±0.05 dB/10 dB 50Ω (5.9 in) (1.25 in) (0.5 lb) 1.25: 6 - 12.4 GHz

1.35: 12.4 - 18 GHz

25 W CW Power Sensor

3

80322A 10 MHz to 18 GHz +44 dBm (25 W)

–

40 to +10 dBm: ±0.00 dB Type N(m) 230 mm 104 mm 0.3 kg 1.20: 0.01 - 6 GHz

–

40 to +44 dBm +10 to +44 dBm: ±0.05 dB/10 dB 50Ω (9.0 in) (4.1 in) (0.6 lb) 1.30: 6 - 12.4 GHz

1.40: 12.4 - 18 GHz

50 W CW Power Sensor

3

80325A 10 MHz to 18 GHz +47 dBm (50 W)

–

40 to +10 dBm: ±0.00 dB Type N(m) 230 mm 104 mm 0.3 kg 1.25: 0.01 - 6 GHz

–

40 to +47 dBm +10 to +47 dBm: ±0.05 dB/10 dB 50Ω (9.0 in) (4.1 in) (0.6 lb) 1.35: 6 - 12.4 GHz

1.45: 12.4 - 18 GHz

Giga-tronics CW Power Sensor Selection Guide Page 4 of 6

Frequency Range/ Maximum Power Linearity

4

Power Range Power (Frequency > 8 GHz) Input Test Port Directivity Weight VSWR

Precision CW Return Loss Bridges

80501 10 MHz to 18 GHz +27 dBm (0.5 W)

–

35 to +10 dBm: ±0.1 dB Type N(f) Type N(f) 38 dB 0.340 kg < 1.17: 0.01 - 8 GHz

–

35 to +20 dBm +10 to +20 dBm: ±0.1 dB 50Ω 50Ω < 1.27: 8 - 18 GHz

±0.005 dB/dB

80502 10 MHz to 18 GHz +27 dBm (0.5 W)

–

35 to +10 dBm: ±0.1 dB Type N(f) APC-7(f) 40 dB 0.340 kg < 1.13: 0.01 - 8 GHz

–

35 to +20 dBm +10 to +20 dBm: ±0.1 dB 50Ω 50Ω < 1.22: 8 - 18 GHz

±0.005 dB/dB

80503 10 MHz to 26.5 GHz +27 dBm (0.5 W)

–

35 to +10 dBm: ±0.1 dB SMA(f) SMA(f) 35 dB 0.340 kg < 1.22: 0.01 - 18 GHz

–

35 to +20 dBm +10 to +20 dBm: ±0.1 dB 50Ω 50Ω < 1.27: 18 - 26.5 GHz

±0.005 dB/dB

80504 10 MHz to 40 GHz +27 dBm (0.5 W)

–

35 to +10 dBm: ±0.1 dB Type K(f) Type K(f) 30 dB 0.198 kg < 1.35: 0.01 - 26.5 GHz

–

35 to +20 dBm +10 to +20 dBm: ±0.1 dB 50Ω 50Ω < 1.44: 26.5 - 40 GHz

±0.005 dB/dB

Giga-tronics Bridge Selection Guide

1

The K connector is electrically and mechanically compatible with the APC-3.5 and SMA connectors. Note: Use a Type N(m) to SMA(f) adapter (part no. 29835) for calibration of power sensors with Type K(m) connectors.

2

Power coefficient equals <0.01 dB/Watt.3Power coefficient equals <0.015 dB/Watt.4For frequencies above 8 GHz, add power linearity to system linearity.5Power coefficient equals <0.01 dB/Watt (Average).6Power coef-

ficient equals <0.015 dB/Watt (Average).

7

Peak operating range above CW maximum range is limited to <10% duty cycle.8Square root of the sum of the individual uncertainties squared (RSS).9Cal Factor numbers allow

for 3% repeatability when reconnecting attenuator to sensor and 3% for attenuator measurement uncertainty and mismatch of sensor/pad combination.

Frequency Range/ Maximum Power Linearity

4

Power Range Power (Frequency > 8 GHz) RF Connector Length Diameter Weight VSWR

200 mW Peak Power Sensors

80350A 45 MHz to 18 GHz +23 dBm (200 mW)–30 to –20 dBm: ±0.00 dB Type N(m) 165 mm 37 mm 0.3 kg 1.12: 0.045 - 2 GHz

–

20 to +20 dBm, Peak CW or Peak

–

20 to +20 dBm: ±0.05 dB /10 dB 50Ω (6.5 in) (1.25 in) (0.7 lb) 1.22: 2 - 12.4 GHz

–

30 to +20 dBm, CW 1.37: 12.4 - 18 GHz

80353A 45 MHz to 26.5 GHz +23 dBm (200 mW)–30 to –20 dBm: ±0.00 dB Type K(m)

1

165 mm 37 mm 0.3 kg 1.50: 18 - 26.5 GHz

–

20 to +20 dBm, Peak CW or Peak

–

20 to +20 dBm: ±0.1 dB /10 dB 50Ω (6.5 in) (1.25 in) (0.7 lb) 1.92: 26.5 - 40 GHz

–

30 to +20 dBm, CW

80354A 45 MHz to 40 GHz +23 dBm (200 mW)–30 to –20 dBm: ±0.00 dB Type K(m)

1

165 mm 37 mm 0.3 kg

–

20 to +0.0 dBm, Peak CW or Peak

–

20 to 0.0 dBm: ±0.2 dB /10 dB 50Ω (6.5 in) (1.25 in) (0.7 lb)

–

30 to +0.0 dBm, CW

5 W Peak Power Sensor

5, 7

80351A 45 MHz to 18 GHz CW: +37 dBm

–

10 to +0 dBm: ±0.00 dB Type N(m) 200 mm 37 mm 0.3 kg 1.15: 0.045 - 4 GHz

0 to +40 dBm, Peak (5 W Average) +0 to +40 dBm: ±0.05 dB /10 dB 50Ω (7.9 in) (1.25 in) (0.7 lb) 1.25: 4 - 12.4 GHz

–

10 to +37 dBm, CW Peak: +43 dBm 1.35: 12.4 - 18 GHz

25 W Peak Power Sensor

6, 7

80352A 45 MHz to 18 GHz CW: +44 dBm 0.0 to +10 dBm: ±0.00 dB Type N(m) 280 mm 104 mm 0.3 kg 1.20: 0.045 - 6 GHz

+10 to +50 dBm, Peak (25 W Average) +10 to +50 dBm: ±0.05 dB /10 dB 50Ω (11.0 in) (4.1 in) (0.7 lb) 1.30: 6 - 12.4 GHz

0.0 to +44 dBm, CW Peak: +53 dBm 1.40: 12.4 - 18 GHz

50 W Peak Power Sensor

6, 7

80355A 45 MHz to 18 GHz CW: +47 dBm 0.0 to +10 dBm: ±0.00 dB Type N(m) 280 mm 104 mm 0.3 kg 1.25: 0.045 - 6 GHz

+10 to +50 dBm, Peak (50 W Average) +10 to +50 dBm: ±0.05 dB /10 dB 50Ω (11.0 in) (4.1 in) (0.7 lb) 1.35: 6 - 12.4 GHz

0.0 to +47 dBm, CW Peak: +53 dBm 1.45: 12.4 - 18 G

Hz

Giga-tronics Peak Power Sensor Selection Guide

Frequency Range/ Maximum Power Linearity

4

Power Range Power (Frequency > 8 GHz) RF Connector Length Diameter Weight VSWR

200 mW Modulation Power Sensors

80401A 10 MHz to 18 GHz +23 dBm (200 mW)–67 to –20 dBm: ±0.00 dB Type N(m) 114.5 mm 32 mm 0.18 kg 1.12: 0.01 - 2 GHz

–

67 to +20 dBm

–

20 to +20 dBm: ±0.05 dB/10 dB 50Ω (4.5 in) (1.25 in) (0.4 lb) 1.22: 2 - 12.4 GHz

80402A 10 MHz to 18 GHz +23 dBm (200 mW)–67 to –20 dBm: ±0.00 dB APC-7 1.29: 12.4 - 18 GHz

–

67 to +20 dBm

–

20 to +20 dBm: ±0.05 dB/10 dB 50Ω

Low VSWR Modulation Power Sensor

80410A 10 MHz to 18 GHz +29 dBm (800 mW)–64 to –14 dBm: ±0.00 dB Type K 1(m) 127 mm 32 mm 0.23 kg 1.13: 0.01 - 2 GHz

–

64 to +26 dBm

–

14 to +26 dBm: ±0.05 dB/10 dB 50Ω (5.0 in) (1.25 in) (0.5 lb) 1.16: 2 - 12 GHz

1.23: 12 - 18 GHz

1 W Modulation Power Sensor

80420A 10 MHz to 18 GHz +30 dBm (1 W)

–

57 to–10 dBm: ±0.00 dB Type K 1(m) 127 mm 32 mm 0.23 kg 1.11: 0.01 - 2 GHz

–

57 to +30 dBm

–

10 to +30 dBm: ±0.05 dB/10 dB 50Ω (5.0 in) (1.25 in) (0.5 lb) 1.12: 2 - 12 GHz

1.18: 12 - 18 GHz

5 W Modulation Power Sensor

2

80421A 10 MHz to 18 GHz +37 dBm (5 W)

–

47 to 0 dBm: ±0.00 dB Type N(m) 150 mm 32 mm 0.23 kg 1.20: 0.01 - 6 GHz

–

47 to +37 dBm 0 to +37 dBm: ±0.05 dB/10 dB 50Ω (5.9 in) (1.25 in) (0.5 lb) 1.25: 6 - 12.4 GHz

1.35: 12.4 - 18 GHz

25 W Modulation Power Sensor

3

80422A 10 MHz to 18 GHz +44 dBm (25 W)

–

37 to +10 dBm: ±0.00 dB Type N(m) 230 mm 104 mm 0.3 kg 1.20: 0.01 - 6 GHz

–

37 to +44 dBm +10 to +44 dBm: ±0.05 dB/10 dB 50Ω (9.0 in) 4.1 in) (0.6 lb) 1.30: 6 - 12.4 GHz

1.40: 12.4 - 18 GHz

50 W Modulation Power Sensor

3

80425A 10 MHz to 18 GHz +47 dBm (50 W)

–

34 to +10 dBm: ±0.00 dB Type N(m) 230 mm 104 mm 0.3 kg 1.25: 0.01 - 6 GHz

–

34 to +47 dBm +10 to +47 dBm: ±0.05 dB/10 dB 50Ω (9.0 in) (4.1 in) (0.6 lb) 1.35: 6 - 12.4 GHz

1.45: 12.4 - 18 GHz

Giga-tronics Modulation Power Sensor Selection Guide (fm< 40 kHz) Page 5 of 6

Frequency Range/ Maximum Power Linearity

4

Power Range Power (Frequency > 8 GHz) RF Connector Length Diameter Weight VSWR

200 mW Modulation Power Sensors

80601A 10 MHz to 18 GHz +23 dBm (200 mW)–67 to –20 dBm: ±0.00 dB Type N(m) 137 mm 41 mm 0.23 kg 1.12: 0.01 - 2 GHz

–

67 to +20 dBm, CW

–

20 to +20 dBm: ±0.05 dB/10 dB 50Ω (5.39 in) (1.62 in) (0.5 lb) 1.22: 2 - 12.4 GHz

1.29: 12.4 - 18 GHz

5 W Peak Power Sensor

5, 7

80621A 10 MHz to 18 GHz +37 dBm (5 W)

–

47 to 0 dBm: ±0.00 dB Type N(m) 175 mm 41 mm 0.28 kg 1.20: 0.01 - 6 GHz

–

47 to +37 dBm 0 to +37 dBm: ±0.05 dB/10 dB 50Ω (6.90 in) (1.62 in) (0.6 lb) 1.25: 6 - 12.4 GHz

1.35: 12.4 - 18 GHz

Giga-tronics Modulation Power Sensor Selection Guide (fm< 1.5 MHz)

Frequency Range/ Maximum Power Linearity

4

Power Range Power (Frequency > 8 GHz) RF Connector Length Diameter Weight VSWR

True RMS Sensors (-30 dBm to +20 dBm)

80330A 10 MHz to 18 GHz +33 dBm (2 W)

–

30 to +20 dBm: ±0.00 dB Type K(m)

1

152 mm 32 mm 0.27 kg 1.12: 0.01 - 12 GHz

80333A 10 MHz to 26.5 GHz 50Ω (6.0 in) (1.25 in) (0.6 lb) 1.15: 12 - 18 GHz
80334A 10 MHz to 40 GHz 1.18: 18 - 26.5 GHz

1.29: 26.5 - 40 GHz

Giga-tronics True RMS Sensors Selection Guide (fm> 1.5 MHz)

Sensor Model

Signal Type 80301A 80350A 80401A 80601A

CW Power Level –70 to +20 dBm –30 to 20 dBm –67 to +20 dBm –67 to 20 dBm
Amplitude Modulation N/A N/A f

m

< 40 kHz, –60 to +20 dBm fm< 1.5 MHz, –55 to +20 dBm
Rate, Power Range fm> 40 kHz, –60 to –20 dBm fm> 1.5 MHz, –55 to –20 dBm
Two-Tone N/A N/A <

40 kHz, –60 to +20 dBm < 1.5 MHz, –55 to +20 dBm
Maximum Separation Between Carriers > 40 kHz, –60 to –20 dBm > 1.5 MHz, –55 to –20 dBm
Pulse Modulation N/A > 350 ns Pulse Width > 200 µs Pulse Width > 300 µs Pulse Width
Burst with Modulation N/A N/A f

m

< 40 kHz, > 200 µs fm< 1.5 MHz,> 300 µs
Pulse Width; –60 to +20 dBm Pulse Width; –35 to +20 dBm
f

m

> 40 kHz, > 200 µs fm> 1.5 MHz, > 300 µs
Pulse Width; –60 to –20 dBm Pulse Width; –35 to –20 dBm

Sensor Measurement Capabilities

Frequency (GHz) Root Sum of Squares (RSS) Uncertainties(%)

8

80321A

9

80301A 80322A

9

80302A 80325A

9

80350A 80303A 80310A 80320A 80421A

9

80401A 80304A 80313A 80323A 80422A980330A 80351A

9

80402A 80353A 80314A 80324A 80425A980333A 80352A

9

Lower Upper 80601A 80354A 80410A 80420A 80621A980334A 80355A

9

0.01 1

1.04 1.64 1.58 1.58 4.54 1.58 4.92
1 2 1.20 1.73 1.73 1.73 4.67 1.73 5.04
2 4 1.33 1.93 1.91 1.91 4.89 1.90 7.09
4 6 1.41 2.03 2.02 2.01 5.01 2.01 7.17
6 8 1.52 2.08 2.07 2.06 5.12 2.06 7.25
8 12.4 1.92 2.55 2.54 2.53 5.56 2.53 7.56

12.4 18 2.11 2.83 2.80 2.79 5.89 2.78 12.37
18 26.5 — 3.63 3.68 3.62 — 3.59 —

26.5 40 — 6.05 5.54 5.39 — 5.30 —

Sensor Calibration Factor Uncertainties

1

The K connector is electrically and mechanically compatible with the APC-3.5 and SMA connectors.
Note: Use a Type N(m) to SMA(f) adapter (part no. 29835) for calibration of power sensors with
Type K(m) connectors.

2

Power coefficient equals <0.01 dB/Watt.3Power coefficient equals <0.015

dB/Watt.

4

For frequencies above 8 GHz, add power linearity to system linearity.5Power coefficient

equals <0.01 dB/Watt (Average).

6

Power coefficient equals <0.015 dB/Watt (Average).7Peak oper-

ating range above CW maximum range is limited to <10% duty cycle.

8

Square root of the sum of

the individual uncertainties squared (RSS).

9

Cal Factor numbers allow for 3% repeatability when
reconnecting attenuator to sensor and 3% for attenuator measurement uncertainty and mismatch of
sensor/pad combination.

Giga-tronics 8540C Series Universal Power Meters Specifications Page 6 of 6

Specifications describe the instrument’s warranted perform­ance, and apply when using 80300A, 80400A, and 80600A
Series sensors.

Typical performance, (shown in

italics

), is non-warranted.

METER

Frequency Range: 10 MHz to 40 GHz

10

Power Range: -70 dBm to +47 dBm

(100 pW to 50 Watt)

10

Single Sensor Dynamic Range:

10

CW Power Sensors: 90 dB
Peak Power Sensors: 40 dB, Peak

50 dB, CW

Modulation Power Sensors: 87 dB, CW

80 dB, MAP/PAP

11

60 dB, BAP

11

Display Resolution: User selectable from

1 dB to 0.001 dB in Log mode, and from 1 to 4
digits of display resolution in Linear mode.

Meter Functions

Measurement Modes (Sensors):

CW (80300A, 80350A, 80400A, 80600A, and Series)
Peak (80350A Series)
MAP/PAP/BAP

11

(80400A and 80600A Series)

Averaging: User selectable, auto-averaging or

manual from 1-512 readings.

dB Rel and Offset: Power display can be

offset by -99.999 to +99.999 dB to account for
external loss/gain.

Configuration Storage Registers:

Allows up to 20 front panel setups.

Power Measurements and Display
Configurations: Any two of the following

channel configurations, simultaneously:
A, B, A/B, B/A, A-B, B-A, DLYA, DLYB

ACCURACY

Calibrator:Power Sweep calibration signal to
dynamically linearize the sensors (Type N connector).

Frequency: 50 MHz, nominal

0.0 dBm Accuracy: ±1.2% worst case for

one year, over temperature range of 5º to 35ºC.

VSWR: <1.05 (Return Loss >33 dB)

Instrumentation, Relative to 0 dBm:

±0.02 dB over any 20 dB range from

-70 to +16 dBm.

±0.02 dB + (±0.05 dB/dB) from

+16 to +20 dBm.

±0.04 dB from -70 to +16 dBm.

Graph shows linearity plus worst case zero set and noise
versus input power

Temperature Coefficient of
Linearity: <0.3%/ºC temperature change following

Power Sweep calibration. 24 hour warm-up required.

Zeroing Accuracy: (CW)

Zero Set:

12

<±50 pW, <±100 pW with

80400A and 80600A Series Modulation Power Sensors.

Zero Drift:

12

<±100 pW during 1 hour

Noise: <±50 pW, <±100 pW with 80400A

and 80600A Series Modulation Power Sensors.
<±200 pW with 80700A Series Sensors,
measureable over any 1 minute interval 3 standard
deviations.

REMOTE INPUTS/OUTPUTS

V Prop F Input (BNC): Used to correct power

readings for sensor frequency response using source
VpropF output.

13

Analog Output (BNC): Provides an output

voltage of 0 to 10V for Channels 1 and 2 in
either Lin or Log units.

13

Does not operate in Swift

or Buffered modes.

Blanking Output (BNC): TTL High during
power meter zero. Can be used to shut off signal
generator RF output during sensor zero.
Trigger Input (BNC): TTL trigger input signal

for Swift and Fast Buffered modes.

GPIB Interface: IEEE-488 and IEC-625 remote

programming

RS232 Interface: Programmable serial interface,

DB-9 connector

GENERAL SPECIFICATIONS

Temperature Range:

Operating: 0º to 50ºC (+32º to +122ºF)
Storage: -40ºC to 70ºC (-40º to +158ºF)

Power Requirements:

100/120/220/240V ±10%,
48 to 440 Hz, 25VA typical

Physical Characteristics:

Dimensions: 215 mm (8.4 in) wide,

89 mm (3.5 in) high, 368 mm (14.5 in) deep

Weight: 4.55 kg (10lbs)

ORDERING INFORMATION

POWER METERS

8541C Single Input Universal Power Meter

(includes 1 sensor cable)

8542C Dual Input Universal Power Meter

(includes 2 sensor cables)

ACCESSORIES

One manual, one power cord, detachable sensor cables.

POWER METER OPTIONS

01 Rack mount kit
02 Add 256K buffer for Fast Buffered Mode Power

Readings Stores up to 128,000 readings
03 8541C Rear Panel Sensor and Calibrator Connections
04 8542C Rear Panel Sensor and Calibrator Connections
05 Soft Carry Case
06 Second Analog Output, -10V to +10 V
07 Side Mounted Carrying Handle
08 Transit Case, (Includes Soft Carry Case)
09 Dual Rack Mount Kit (with assembly instructions)
10 Dual Rack Mount Kit (factory assembled)
11 Time Gating

80301A
80310A
80320A
80321A
80322A
80325A
80330A

80401A, 80601A (CW)

-70

-64

-60

-50

-40

-40

-30

-67

-60

-54

-50

-40

-30

-30

-20

-57

-50

-44

-40

-30

-20

-20

-10

-47

-40

-34

-30

-20

-10

-10
0

-37

-30

-24

-20

-10
0
0

10

-27

-20

-14

-10
0

10
10
20

-17

-10

-4
0

10
20
20

-7

0

6
10
20
30
30

3

10
16
20
30
40
40

13

20
25
30
40
44
50

20

3

2

1

0

-1

-2

-3

SENSORS

TYPICAL ERROR (dB)

Input, (dBm)

© 1998 Giga-tronics Incorporated GT-152-A

Giga-tronics Incorporated
4650 Norris Canyon Road
San Ramon, California 94583
Telephone: [phone] or

925 328 4650
Telefax: 925 328 4700
Web Site: www.gigatronics.com

10

Depending on sensor used.

11

MAP (Modulated Average Power), PAP (Pulse Average Power), BAP (Burst Average Power).12Specified performance

applies with maximum averaging and 24 hour warm-up at constant temperature.

13

Operates in Normal Mode only.

Specifications subject to change without notice.