General Information
Model 8642A/B
Table 1-1. Specifications (2 of 6)
Electrical Characteristics
SPECTRAL PURITY (Cont'd)
Residual FM
Band
10 (8642B only)
9
8
1-7
HET
Residual AM
Spurious Output Signals
Harmonics
Sub-harmonics
Non-harmonics
OUTPUT
Level Range
Maximum Level Available
Resolution
Absolute Level Accuracy
4
Flatness
Impedance
SWR
Reverse Power Protection
Third Order Intermodulation
Available Calibration Units
3
Not specified in HET band.
4
Absolute output accuracy consists of allowances
Performance Limits
Post Detection Bandwidth
0.3 to 3.0 kHz 0.05 to 15.00 kHz
<5 Hz rms <9 Hz rms
<2 Hz rms <5 Hz rms
<1.2Hzrms <2 Hz rms
<1 Hz rms <1.2 Hz rms
<3.5 Hz rms <5 Hz rms
<0.01%
AM rms
8642A/B, 8642B,
Bands 1-9, HET Band 10
-30 dBc -25 dBc
-20 dBc -20 dBc
none -45 dBc
-100 dBc
3
-94 dBc
From Maximum Level Available to
-140 dBm (0.023 teV into 50 ohms)
+20 dBm (2.24V)
+
19
dBm (2.00V)
+
18
dBm (1.78V)
+ 17 dBm (1.59V)
+
16
dBm (1.41V)
0.1 dB
±1 dB
<±0.75 dB
50 ohms nominal
<1.5:1
<2.0:1
50W, 25 Vdc, 8642A
25W, 50 Vdc, 8642B
<-50 dBc at +10 dBm. Typically
decreases 10 dB for every 5 dB
of combined level decrease
dBm,
V, mV, vM, dB^V, EMFV,
EMF mV, EMF ^V, dB EMF
M
V.
REL ZERO or REF SET can be
used to obtain settings such as
dBV or dBf.
for detector linearity, temperature, flatness, and att
Conditions
CW, AM, or Angle Modulation
<
1
/3 Maximum Peak Deviation
0.3 to 3.0 kHz
Post Detection Bandwidth
Output level <+10 dBm
Output level <+16 dBm
>10 kHz from the carrier
8642A (except 8642B and
Opt. 003) 8642A Opt. 003
bands
1
thru 7 bands 1 thru 7
DNA band 8
band 8, HET HET
n/a band 9
band 9 band 10(8642B)
Output levels >-127 dBm
Output level, +10 dBm
Output levels <0 dBm
Output levels >0 dBm
Two signal generators with frequen-
cies spaced 25 kHz apart into a
resistive combiner
enuator accuracy.
1-8