HP 11793A Operating And Service Manual page 24

Model 11793A
Frequency (MHz)
2 000
1 0
000
17
200
18 000
18 000
Microwave Converter
level (dBm) Frequency (MHz)
-1
5
2 000
-1 5
10 000
-1 5 17
200
-1 5 18 000
-15 18 000
Table 6. Performance Test Instrument Settings
25 900
25 900
LO Source
-1 5
25
900
-15
25 900
Frequency (MHz)
I
Level (dBm)
2 063
10 063
17
263
18
063
18
063
+8
+8
+8
0 '
+8'*
25 9 6 3 ' " 0 '
25 9 6 3 " '
I
+8"
Signal Source
Measuring Instrument
I
Display
'Use
this
level
only if the
LO
amplifier is installed (Option
001, 011
or
021).
"Use this
level
only if the
LO
amplifier
is
not installed (Option
001.
011
or
021).
"'Omit this step if maximum system frequency is
18 GHz.
25. Adjustments
The only adjustment necessary is setting the +12V power supply. Connect a dc voltmeter to the case of
VR3. (See Service Sheet 3.) Adjust A I R 5 on the AI Switch Control Assembly until the voltage is between
+11.9 and + I 2 1 Vdc.
26. Replaceable Parts
Table 7 lists all replaceable parts in alphanumeric order by reference designator. Table 8 contains the
names and addresses that correspond to the manufacturer's code numbers.
27. Replaceable Parts List
Table 7, Replaceable Parts. is organized as follows:
a. Electrical assemblies and their components in alphanumeric order by reference designation.
b. Chassis-mounted parts and mechanical parts in alphanumeric order by reference designation.
The following information is provided for each part:
a. The Hewlett-Packard part number.
b. Part number check digit (CD).
c. The total quantity (Qty) is provided on the first entry of the part number.
d. The description of the part.
e.
A typical manufacturer of the part in a five-digit code.
f. The manufacturer's number for the part.
1 3