HP 8568b schematic

""SPECIFICATIONS:8568B SPECTRUM ANALYZER""

Mod E44 Changes

The 8568B E44 system includes the 85662A Opt. 010 heavy duty rack slides plus
"handles, it also removes the battery backup for memory located on A15 Control-"
"ler to comply with MIL-T-28800 (see last page of Description for more info)," and the
following specifications are changed: This list is ADDS/DELETES/CHANGES
"required to ""SPECIFICATIONS:8568B SPECTRUM ANALYZER"" manual part #08568-

90046)"

1) "Under FREQUENCY Section
i) Under MEASUREMENT RANGE: Change to read:

(1) 1000 Hz to 1500 MHz

b) "Under FREQUENCY SPAN ACCURACY:

i) Change to read: For spans >1MHz, +/-5% of the actual frequency separation

between two points +0.5% of span setting); for "spans equal to or less than
1MHz, +/-(5% of frequency separation +0.5% of span).

c) Under READOUT ACCURACY:

i) SPAN equal to or greater than 100Hz: Change to read: +/-(5% of frequency

span + frequency reference error x tune frequency + 10Hz) in AUTO resolution
bandwidth after adjusting FREQ ZERO at stabilized temperature, and using the
error correction function, SHIFT W and SHIFT X. Add 30% of the resolution
bandwidth setting if error correction is not used.

d) Under RESOLUTION:

i) Under RESOLUTION BANDWIDTH:

(1) Change to read: 3dB bandwidths of 30Hz to 1MHz in a 1,3,10 sequence.

Bandwidth may be selected manually or coupled to frequency span.

ii) Under BANDWIDTH ACCURACY: Calibrated to:

(1) Change to read: "+/-20%, 1MHz to 30Hz" 30kHz and 100kHz bandwidth

accuracy figures only applicable equal to or less than 90% R.H

e) Under BANDWIDTH SELECTIVITY:

i) Change to read: 60dB/3 bandwidth ratio:

(1) "<15:1, 1MHz to 100kHz"
(2) "<13:1, 30kHz to 10kHz"
(3) "<11:1, 3kHz to 30Hz"

f) Under FREQUENCY COUNT:

i) "Under FREQUENCY REFERENCE ERROR:

(1) after 30 day warm-up (see also STABILITY "Drift): Change table to read:

AGING RATE TEMPERATURE STABILITY
<1X10^-5/YR <1X10^-5 0-55 DEGR. C

g) Under STABILITY:

i) Under RESIDUAL FM:

(1) Change to read: <10Hz peak-to-peak "equal to or less than 10 sec; span

<100kHz, resolution bandwidth equal to or" "less than 30Hz, video
bandwidth equal to or less than 30Hz."

C:\Documents\1_Manuals\e44.doc
Created on 3/31/2007 5:54 PM
Last printed 5/5/2007 6:55 AM

ii) Under DRIFT (After 1 hr. warm-up at stabilized temperature):

(1) Change the table to read:

(a) FREQUENCY SPAN DRIFT (MINUTE OF SWEEP TIME)

(i) <= 100kHz 30Hz
(ii) >100kHz
(iii) but
(iv) < 1 MHz < 100 Hz
(v) > 1 MHz < 300 kHz

h) Under SPECTRAL PURITY:

i) Under NOISE SIDEBANDS:

(1) Change table to read:

(a) OFFSET FROM CARRIER SSB PHASE NOISE (1Hz BW)

(i) 900Hz -85dBc
(ii) 3kHz -90dBc
(iii) 30kHz -105dBc

ii) Under LINE RELATED SIDEBANDS:

(1) Change to: >80dB below the peak of a CW signal.

2) "Under AMPLITUDE Section

a) Under MEASUREMENT RANGE:

(1) Change to read: -127dBm to +30dBm.

b) Under RESIDUAL RESPONSES:

i) (no signal at input): Change to read: <-100dBm for frequencies >500Hz with

0dB input attenuation.

c) Under AVERAGE NOISE LEVEL:

i) Change to read: Displayed <-127dBm for frequencies >1MHz, <-112dBm for

frequency equal to or less than 1MHz but >1kHz with 30Hz resolution
bandwidth, 0dB input attenuation, 1Hz video filter. "Displayed>-115dBm for
1MHz to 1500Mhz, with 1kHz resolution bandwidth."

d) Under VIDEO BANDWIDTH:

i) Change to read: Post detection low pass filter used "to average displayed

noise; bandwidth variable from 1Hz to 1MHz in a 1,3,10" sequence. All
bandwidths are nominal.

e) Under GAIN COMPRESSION:

i) Change to read: <1.0dB for total signal power equal to or less than -10dBm at

the input mixer.

f) Under DYNAMIC RANGE:

i) Under SPURIOUS RESPONSES:

(1) Change to read: For a total "signal power of <-40dBm at the input mixer of

the analyzer, all image and out- "of-band mixing responses, harmonic and
intermodulation distortion products are >70dB below the total signal power.

(2) Under SECOND HARMONIC DISTORTION:

(a) Change to read: For a signal -30dBm at the mixer >60dB down.

(3) Under THIRD-ORDER INTERMODULATION DISTORTION:

(a) Change to read: "For two signals each -30dBm at the mixer, third-order

intermodulation" products are >70dBc. Delete the table which follows the
above sentence.

C:\Documents\1_Manuals\e44.doc
Created on 3/31/2007 5:54 PM
Last printed 5/5/2007 6:55 AM