HP 608E Operating And Service Manual page 9

Model 608E/F Section I
Table I-I. Specifications (Cont.)
MODULATION CHARACTERISTICS
(Front-panel AMP. TRIMMER control adjusted for
maximum indication of RF Output Meter and RF
Output Meter set to Attenuator Calibrated.)
Internal AM
Frequency: 400 and 1000 Hz, ,:tl0%. Modula-
latton signal available at front panel BNC fe-
male connector for synchronization of external
equipment.
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GENERAL
608E and 608F
Power: 115 or 230 V
.±IO%,
50 to 400 Hz. Approxi-
mately 220 W.
Dimensions
Cabinet Mount: 13-1/4 in. (337 mm) wide, 16-3/4
in. (416 mm) high, 21 in. (533 mm) deep.
Rack Mount:
Above 220 MHz, combined rise and decay time
less than 2. 5 ~s.
On-Off Ratio: At least 20 dB [or pulsed carrier
levels o( O. 5 V and above.
Input ReqUired: Positive pulse, 10-50
V
peak;
input impedance 2
k
n .
608F
Modulation Level: 0 to
95% modulation with
Output Attenuator at
0.224
V
(1
mW)
or
be-
low; continuously
ad-
justable with front-
panel MOD LEVEL
control.
Carrier Envelope Distortion: Less than 2% at
30% AM and less than 5% at 70% AM.
608E
Modulation Level: 0 to
95% modulation at
carrier levels 0.5 V
and below; continu-
ously adjustable with
(ront-panel MOD
LEVEL control.
•
Modulation Meter
Accuracy: ±5% o(full scale 0 to 80%, .±.IO% from
80% to 95% «(or
lNT
AM or 20 Hz to 20 kHz
EXT AM).
Incidental Frequency Modulation (at 400 and 1000
Hz modulation)
Less than 1000 Hz peak at 50% AM for frequen-
cies above 100 MHz. For frequencies below
100 MHz, less than 0.001% at 30% AM.
External Pulse Modulation
Rise and Decay Time: From 40 MHz to 220 MHz,
combined rise and decay time less than 4 ~s.
.i
f-
" I
t:k
'''.0'
RUR
".
Weight
Cabinet Mount: Net, 62 Ib (28 kg). Shipping, 74
Ib (33, 4 kg).
Rack Mount: Net, 62 lb
(28
kg). Shipping, 83 lb
• (37, 4 kg).
Accessories Available
11508AOutput Cable prOVides 50-
n.
termination
and standard binding posts at the end of a 24-
inch (610 mm) length of cable. Allows direct
connection o( the signal generator to hlgh im-
pedance circuits.
11509A Fuse Holder provides protection for the
output attenuator when the 608 is used for trans-
ceiver tests.
10514A Mixer foruseas nanosecond pulsemodu-
lator or balanced modulator.
10515A Doubler for extending the frequency range.
608F
Modulation Level: 0 to
95% modulation with
Output Attenuator at
0.224
V (1 roW)
or
be-
low; continuously
ad-
justable with front-
panel MOD LE
VEL
control. Input re-
quired: 1 to 10 V
rms (1 k
n
lnput
lmpedance) .
Carrier Envelope DistorUon: Less than 2% at
30% AM, less than 5% at 70% AM (modulation
source distortion less than O. 5%).
External control o( carrier level can
be
achieved
through application o( dc voltage in EXT AM
mode.
Modulation Level: 0 to
95% modulation at
carrier levels 0.5
V
and
-below; continu-
ously adjustable
with
front-panel MOD
LEVEL control. In-
put requlred:
1
to 10
V
rms
(1 k
n
input
impedance) .
External AM
Frequency: 20
Hz
to 20 kHz.
608E
1-3