HP 8656 Series User Manual

OUTPUT
Level F&ange (3 1A-digit LED display): +13 dBm to
-127 dBrn into 50R.
Resolution: 0.1 dB.
Ahsolute Level Aocuracy:'*
c ?l .O dB (123.5 to 990 MHz, +7 to -124 dBm),
c i1.5 dB (0.1 to 123.5 MHz, and <-I24 dBm
or > +7 dBm at 0.1 to 990 MHz.
Level Flatness (100 kHz to 9W) MHz): 5 1.0 dB,
output level setting of 0 dBm.
SWR : c 2.0 for levels >3 dBm.
< 1.5 for levels 5 -5 dBm.
Reverse-Power Protection: Protects the signal
generator from applications of up to 25 watts of
RF power (from a 509 source) to 990 MHz into
generator output; DC voltage cannot exceed 25 V.
SUPPLEMENTAL CHARACTERISTICS
Impedance: 50 S2 Nominal.
Typicul Output Leuel Overrange:
Typical Maxlmurn Outpul Power VS Frequency
(Outpul Set lo +I7 dBm)
I0
17
16
.-.
15
14
= 13
I ::
1
d
3
2
1
0
0 200 400 600 lm
C& hegwnM (MHz)
AMPLITUDE MODULATION
AM Depth(2-digit LED display)-
0 to 99%, levels of < +7 dBm
0 to 30%, levels to < +10 dBm
Resolution: 1 %.
AM Rate,
Internal: 400 Hz and 1 kHz, + 3%.
External: 20 Hz to 40 kHz (1 dB bandwidth,
AC
coupled)
AM Distortion (internal rate^):
Oto3O%AM < 1.5%.
31 to 70 % AM < 3.0%.
71 ix 90 % AM c 4.0%.
Indicator Accuracy (for deptbs e
and
internal rates and levels < +7 dBmF@:
< f (2% M% of setting).
Incidental Phase Modulation (at 30% AM depth,
internal rates): i 0.3 radians peak.
FREQUENCY MODULATION
Maximum FM Peak Deviation (bfplr):"d
Resolution: 100 Hz for deviations less than 10 kHz;
1 lrHz for deviations 2 10 Hz.
FM Rate,
Internal: 400 Hz and 1 kHz, B%.
External: dd5 kHz, to 100 kHz,3 dB bandwidth
dc)20 Hz to 50 kHz, 1 dB bandwidth
Center Frequency Accuracy in dc Mode:
Cenbr
mu-? ..
"
0.1 to 123.6MEh
123.8to247Mk
247 B 494 MHz
494 to 990 MHz
Center Frequency Stability in dc Mode:
<10 Hz per hour drift {typ < 3 Hz per hour).
FM Distortion (at internal rates and 2 3 kHz peak
deviations)P"
i 0.5% THD plus nok
Indicator Accuracy (internal mh)Bd
< f 5% of setting.
Incidental AM (peak deviations <a0 kHz, inter-
nal rates): < 0.1% ( ft r 500 kHz)
c 1% ( ft= 200 to 500 kHz)
< 5% ( fc < 200 kHz)
FM not specified for ft - (Af*) <1M) kHz
MaxjmtnnPeak~tion
Mer
rn-
0.1 to 123.5 MHz
123.5 b 247 MHz
247 to 4W MHz
4Mto990hWa
SUPPLEMENTAL CHARACTERISTICS
External Semitivie: 1 volt peak for indicated
atcuracy for ac signals or 1 vodt dc when in dc-FM
mode.
External Mdulation Input: Front panel BNC,
600R dc-coupled; front panel annunciators
indicate application of 1 V peak signal + 5%.
Mduluting Signal Output: Internal modulating
signal is provided at the front panel RNC connector
at nominally 1 volt peak into a 600 Sa resistive
load.
Simltmeow Mod~ladion:
Internal 1 External: AM 1 FM, FM /AM, AM /AM,
Flu / FM,
Internal /Internal, External 1 External: AM / FM.
ACMde(thehr@
99 kHz or 4000 x rate (Hz)
SOkHz or 1000xrate(Hz)
99 kHz or 2000 x rate (Hz)
99 kHz or 4000 x rate (Hz)
Center F*equency
Aceufacy
f 500 Hz
f 125 Hz
f 250 Hz
f 500 Hz
DCMode
99 kHz
50kHz
99 kHz
99 kHz

HP 8656 Series Specifications

General

Brand	HP
Model	8656 Series
Category	Portable Generator
Language	English