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Rf level, Audio filters, Rear panel inputs/outputs – Atec Agilent-8901A User Manual

Page 3: Calibrators (option 010), General

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3

RF Level

(Peak voltage responding, rms sine wave power

calibrated).

Range:

1 mW to 1 W.

Accuracy:

±2 dB, 150 kHz to 650 MHz.

±3 dB, 650 MHz to 1300 MHz.

SWR:

<1.5 in a 50

system.

Supplemental Characteristics

Typical Accuracy:

150 kHz to 650 MHz:

±1.0 dB.

650 MHz to 1300 MHz:

±1.5 dB.

Resolution:

0.1 mW for levels 0.1 to 1 W.
0.01 mW for levels 0.01 to 0.1 W.
0.001 mW for levels <0.01 W.

Audio Filters

High Pass (3 dB cutoff frequency):

50 Hz and

300 Hz.

Low Pass

(3 dB cutoff frequency except

>20 kHz filter):

3 kHz, 15 kHz, >20 kHz.

De-emphasis Filters:

25

µ

s, 50

µ

s, 75

µ

s, and 750

µ

s.

De-emphasis filters are single pole low pass
filters whose 3 dB frequencies are 6366 Hz for
25

µ

s, 3183 Hz for 50

µ

s, 2122 Hz for 75

µ

s, and

212 Hz for 750

µ

s.

Flatness:

50 Hz High Pass: <1% at rates

200 Hz.

300 Hz High Pass: <1% at rates

1 kHz.

3 kHz Low Pass: <1% at rates

1 kHz.

15 kHz Low Pass: <1% at rates

10 kHz.

>20 kHz Low Pass: <1% at rates

10 kHz.

Supplemental Characteristics

50 Hz and 300 Hz High Pass: Two pole.

3 kHz and 15 kHz Low Pass: Five pole.

>20 kHz Low Pass: Nine pole bessel (typically

3 dB at 100 kHz).

High and Low Pass 3 dB Frequency Accuracy:

±3%.

De-emphasis Filter Time Constant Accuracy:

±3%.

Overshoot on Square Wave Modulation (>20 kHz

low pass filter

7

): <1%.

Rear Panel Inputs/Outputs

Supplemental Characteristics

FM Output: 10 k

impedance,

9 V to 6 V into an

open circuit: ~6 V/MHz, dc coupled, 16 kHz
bandwidth (one pole).

AM Output: 10 k

impedance,

4 V to 0 V into an

open circuit, ~8 mV/%, dc coupled, 16 kHz
bandwidth (one pole).

Recorder Output: DC voltage proportional to peak

voltage of the modulation output, 1 k

imped-

ance, 0 V to 4 V for each resolution range into
an open circuit.

IF Output: 50

impedance, 150 kHz to 2.5 MHz,

27 dBm to

3 dBm.

10 MHz Reference Output: 50

impedance,

TTL levels (0 V to >2.2 V into an open circuit),
available only with Option 002 1x10

9

/day

internal reference, outputs internal reference
only.

10 MHz Reference Input:

8

>500

impedance,

0.5 V

peak-to-peak

minimum input level.

LO Input (Option 003): 50

impedance,

~1.27 MHz to 1301.5 MHz, 0 dBm.

Calibrators (Option 010)

AM Calibrator Depth and Accuracy:

33.33%

depth nominal, internally calibrated to an
accuracy of ±0.1 % .

FM Calibration Deviation and Accuracy:

34 kHz

peak

deviation nominal, internally

calibrated to an accuracy of ±0.1%.

Supplemental Characteristics

Carrier Frequency: 10.1 MHz.

Modulation Rate: 10 kHz.

Output Level:

25 dBm.

General

Temperature:

Operating 0° to 55 °C.

Storage:

55 °C to 75 °C.

Remote Operation:

HP-IB; all functions except the

line switch are remotely controllable.
HP-IB compatibility; as defined in IEEE 488-1978
is: SH1, AH1, T5, TE0, L3, LEO, SR1, RL1, PP0,
DC1, DT1, C0.

EMI:

Conducted and radiated interference is within

the requirements of methods CE03 and RE02 of
MIL STD 461A (for inputs <10 mW), VDE 0871
(Level B), and CISPR publication 11.

7 The >20 kHz low pass filter is intended for minimum overshoot

with square wave modulation.

8 External reference accuracy affects accuracy of all measure-

ments.