Model
8904A
General Information
mble
1-1.
HP
8904A
Specifications
(3
of
4)
Digital Sequence (with Option
001)
User definable:
On level
(=lOV
open circuit),
Off level
(2
1OV
open circuit), and period.
Sequence
entry:
Binary, octal, or hexidecimal.
Sequence length: Up to
3000
bits.
Period duration: 0.10 ms to 655.35 ms.
Period resolution:
0.01
ms
(10
ps).
Period accuracy:
20.02
ms
(=
20
ps).
Control modes (applies
to
tone, DTMF
and
digital sequence
modes): Manual sequence (allows stepping through sequence),
single sequence, and continuously repeat sequence.
Sequence can also be triggered by external TTL pulse.
Hop
Ram
Sequence (with Option
001)
Number of different States: 16 user definable states each with
an amplitude, frequency, and phase value.
Waveforms: Sine, square, ramp, triangle, dc, and white
Gaussian noise.
Sequence entry: Binary, octal, or hexidecimal.
Sequence
length
up to
3000
tones
in
binary mode
(two
states
used), or up to 750 tones in hex mode (all 16 states used).
Sequence clock frequency range: 0.1
Hz
to
10
kHz.
Sequence clock frequency resolution:
0.1
Hz.
Sequence burst range:
1
repetition up to 127.
Control modes: Manual sequence (allows stepping through
sequence), burst sequence
(1
to
127),
and continuously
repeat sequence. Sequence can be triggered by external TTL
pulse.
OPTION
002
SPECIFICATIONS
(5052
outputs only)
Output
1
to Output
2
phase accuracy (sine waves at the
same frequency):
k0.lo
or
30
ns,
0.1
Hz to
ZOO
kHz,
whichever is greater.
Supplemental Characteristics
Output
1
to
Output
2
cross-talk
(the
higher
OD:
Typically:
-100
dB or
20
IJY-,,
0.1
Hz to
20
kHz.
-95
dB or
ZOpV,,
0.1
Hz
to
100
kHz.
-90
dB
OT
30
pq-,,
0.1
HZ
to
600
kHz.
OPTION
003
SPECIFICATIONS
(5052
outputs only)
Direct addressing of channel
A
Up to 16 phase-frequency-
amplitude states of channel
A
may be preset and directly
addressed with four TTL-compatible inputs. Timing for fast
hopping must be provided by an EXTERNAL source.
Digital modulation:
By
appropriately setting the 16 direct
control registers, the HP 8904A may be used as a digital
modulator. Examples of signals which can be generated
with this technique include FSK or multilevel
FM
(up to 16
levels), BPSK, QPSK, and QAM.
Supplemental Characteristics
Switching Speed:
Via digital port: Typically
<8
CIS,
<20
ps
for full filter settling.
Via HP-IB: Typically
<8
ms.
approximately
400
kHz.
25
ns
for valid results.
Maximum switching rate
(via
digital control port):
Maximum allowable
address
skew
(via
digital port):
OPTION
005
SPECIFICATIONS
(5052
outputs only)
Unit to unit phase accuracy: Additional 30 nsec error,
0.1
Hz
to
100
kHz. (Total phase error between units is then the
greater of
20.1
degree or 60 nsec,
0.1
Hz to
100
kHz.)
Maximum
number of synchronized units:
8
units using
low-loss power splitters (for a total of 16 phase related
outputs if all units have Option
002).
54
units synchronized: Mini-Circuits model ZSC-4-3 or
equivalent.
18
units synchronized: Mini-Circuits model ZFSC-8-1 or
equivalent.
Recommended power splitters:
Supplemental Characteristics
Unit
to unit phase accuracy: typically
<
15
nsec additional
error,
0.1
Hz
to
100
kHz. rota1 typical phase error between units
is then the greater of
20.1
degree or
30
nsec,
0.1
Hz
to
100
kHz.)
OPTION
006
SPECIFICATIONS
(Sine wave only)
All specifications for the standard 50Q HP 8904A are degraded
by the accuracy, flatness, and distortion specifications of the
Option 006, 600Q transformer coupled output. Because the
transformer output was designed for passing sinewaves only,
all specifications apply to that waveform. The Option 006
output will not pass digital sequences available with Option
001. In addition, phase accuracy is degraded and therefore not
specified for Option 006.
Output type: fully floating/balanced transformer coupled output.
Usable output frequency range: 30 Hz to
200
kHz.
AC
amplitude (sine wave only)
Range: Open circuit:
0
to
20
Vrms.
600Q load:
0
to
10
Vrms.
15052 load:
0
to
4
Vrms.
50Q
load:
0
to 1.5 Vrms.
Resolution:
3%
digits.
Accuracy (amplitude
>40
mVrms into a balanced 6000 load):
6% (0.5 dB) 30 HZ to
20
kHz.
12%
(1.0
dB) 30 Hz to
100
kHz.
Flatness (amplitude
>40
mV rms into a balanced
600Q
load,
1
kHz
reference):
+
0.15 dB,
-0.15
dB, 30 HZ
to
20
kHz.
+
0.15 dB, -0.75 dB, 30 HZ to
100
kHz.
Spectral Purity (sine wave only)
THD
+
N (including spurs, amplitude
140
mVrms to
10
Vrms into a balanced 600Q load):
-46 dB (0.50%), 30 Hz to 300 Hz, 30 kHz BW, amplitude
<
1
V,,
into a balanced 6000 load.
-60 dB
(O.lOYo),
300 HZ to 7.5 kHz,
30
kHz
BW.
-63 dB (0.07%), 7.5 kHz to 20 kHz, 80 kHz
BW.
-55 dB
(0.18%),
20 kHz to
100
kHz, 750 kHz'BW.
Supplemental Characteristics
Balance: Typically
>40
dB,
30
Hz to
50
kHz.
Output Impedance: Nominally
60OQ
at
2
kHz.
Flatness (amplitude
>40
mV rms
into
a balanced
60012
load,
1
kHz reference):
+
0.15
dB,
-4.0
dB,
30
Hz
to
200
kHz.
THD+N
(including spurs, amplitude
240
mVrms
to
I
Vrms
info
a
balanced
60OQ
load):
<-50
dB
(0.32%),
30
HZ
to
300
Hz,
30
kHZ
BW.
reu.01
NOV89
1-5
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