General Information 
Model 436A 
Table 
1-1. 
Specifications 
SPECIFICATIONS 
Frequency 
Range: 
Response 
Time: 
100 
kHz 
to 
26.5 
GHz 
(depending on power sensor used). 
(0 
to 
99% 
of 
reading, 
five 
time constants) 
Power 
Range: 
Range 1 (most sensitive) 
<10 
seconds. 
Range 2 
<1 
second 
(display calibrated 
in 
watts, dBm, and 
dB 
relative to 
reference power level). 
With 
8481 
A, 
8482A, 
or 
8483A 
sensors: 
50 
dB 
with 5 
full scale ranges 
of-20, 
-10, 
0, 10, 
and 
20 
dBm 
(10 
µW 
to 
100 
mW). 
With 
8481 
B 
or 
84828 
sensors: 
HP 
8481B 
is 
44 dB 
(1 
mW 
to 
25W) 
at 
0 to 
35°C 
and 
HP 
8482B 
is 
43 
dB 
(1 
mW 
to 
20W) 
at 
35°C 
to 
55°C 
with 5 ranges 
of 
10, 20, 30, 40 
and 43 
or 
44 dBm. 
With 
8481 
H 
or 
8482H 
sensors: 
45 
dB 
with 5 ranges 
of 
0, 
10, 
20, 30 
and 35 dBm (1 
mW 
to 
3W). 
With 
8484A 
sensor: 
50 
dB 
with 5 full scale ranges 
of 
-60, 
-50, 
-40, 
-30, 
and 
-20 
dBm 
(1 
n W to 
lOµW). 
Range 
3-5 
<100 
milliseconds. 
(Typical, measured 
at 
recorder output). 
Cal 
Factor: 
16-position switch normalizes meter reading to 
ac· 
count for calibration factor 
or 
effective efficiency. 
Range 
85% 
to 
1003 
in 
13 
steps. 
Cal 
Adjustment: 
Front panel adjustment provides capability 
to 
adjust 
gain 
of 
meter 
to 
match power sensor in use. 
Recorder 
Output: 
Proportional 
to 
indicated power with 1 volt 
corre-
sponding 
to 
full scale and 
0.316 
volts 
to 
-5 
dB; 
Accuracy: 
1 
kn 
output 
impedance, 
BNC 
connector. 
1-2 
lnstrumentation
1 
: 
Watt mode:  ±0.53. 
dBm mode: 
±0.02 
dB 
±0.001 dB/°C.
3 
dB 
[REL] 
mode
2
: 
±0.02 
dB 
±0.001 
dB/°C~ 
Zero: 
Automatic, operated by front panel switch. 
Zero 
set: 
±0.53 
of 
full scale on most sensitive range. 
typical, 
±1 
count on other ranges. 
Zero 
carry 
over: 
±0.23 
of 
full scale when zeroed 
on 
the most sensitive range. 
Noise 
(typical, at constant temperature, peak change 
over any one-minute interval): 
20 
pW 
(8484A); 
40 
nW 
(8481A, 8482A, 8483A); 4 
µW 
(8481H, 
8482H). 
Drift 
(1 
hour, typical, at constant temperature after 
24-hour 
warm-up); 
20 
pW 
(8484A); 
10 
nW 
(8481A, 
8482A, 8483A); 
1.0 
µW 
(8481H, 8482H). 
Power 
Reference: 
Internal 50 
MHz 
oscillator with 
Type N Female connector on front panel (or 
rear 
panel, 
Option 003 
only). 
Power output: 
1.00 
mW. 
Factory set 
to 
± 
0.7%, 
traceable 
to 
the National 
Bureau of Standards. 
Accuracy: 
±1.2% 
worst  case 
(±0.9% 
rss)  for  one 
year (0°C 
to 
55°C). 
RF 
Blanking 
Output: 
Open collector TTL; low conesponds to blanking 
when auto-zero mode 
is 
engaged. 
Display: 
Digital display with four digits, 
203 
over-range 
capa-
bility on all ranges. Also, uncalibrated analog 
peak· 
ing 
meter 
to 
see fast changes. 
Power 
Consumption: 
lOOV 
± 
103, 
48 
to 66 
Hz 
and 
360 
to 
440 
Hz. 
120V 
+53, 
-103, 
48 
to 
66 
Hz 
and 
360 
to 440 
Hz. 
220 
or 
240V 
+53, 
-103 
48 
to 66 Hz. 
Typically less than 24 watts (<25 watts for 
Opt. 
022), 
60V·A 
maximum. 
Dimensions: 
134 mm High (5-1/4 inches). 
213 mm Wide (8-3/8 inches). 
279 mm Deep (11 inches). 
Net 
Weight: 
4.5 
kg 
(10 
lbs). 
1
Includes sensor non-linearity. Add 
+2, 
-4% on top range when using the 
8481A, 8482A, 
or 
8483A 
power 
sensors. 
2
Specifications are for within range measurements. For range-to-range accuracy add the range uncertainties. 
3
Referenced to 
25°C. 
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