HP 8559A User Manual

ADJUSTMENTS
5 - 25. FIRST CONVERTER ADJUSTMENTS (SERIAL PREFIX 2236A) (Cont'd)
Connect frequency counter to analyzer RF Input.
Jumper
A16TP1 DIODE BIAS to Ground. A16TP1 is located on the Motherboard through a hole in the
analyzer side frame.
Adjust front-panel TUNING control for DVM indication of
0.000 Vdc (fully counterclockwise).
Adjust
A7R74 3 GHz for frequency counter indication of 3.000 GHz + 1 MHz. If this adjustment cannot
be achieved, selectable resistor
A7R94* can be changed to provide the proper range necessary.
Adjust front-panel TUNING control for DVM indication of
- 10.000 Vdc.
Set
A7R95 6 GHz F (fine) to approximately midrange (R95 is a 20-turn potentiometer).
Adjust
A8R28 6 GHz C (coarse) for a frequency counter indication of 6.000 GHz * 2 MHz.
Retune front-panel TUNING control for
0.000 Vdc DVM indication and readjust A7R74 3 GHz if neces-
sary for frequency counter indication of
3.000 GHz + 1 MHz.
The front-panel TUNING control for - 10.000 Vdc DVM indication.
Lightly tap the top edge of the A7 Frequency Control board with the handle of a small screwdriver to seat
controls.
Adjust A7R95 6 GHz F (fine) for frequency counter indication of 6.000 GHz + 1 MHz.
Alternate IF First LO Shift Check
15.
Press front-panel ALT IF pushbutton IN to activate alternate IE
Verify YTO frequency shift according to the following table.
I 6 (12.1 - 21) I ON I Reference t5 MHz k300 kHz
TABLE 5-10. FIRST LO SHIFT CHECK
17. Remove jumper from A16TP1 DIODE BIAS to Ground.
FREQUENCY BAND GHz
1 (.Ol-3)
1 (-01-3)
2 (6 - 9)
3 (3 - 9)
4
(9-15)
5 (6-15)
ALT IF
OFF
ON
ON
ON
ON
ON
FREQUENCY COUNTER INDICATION
Reference (6.000 GHz)
Reference - 1 5 MHz +800 kHz
Reference t15 MHz +800 kHz
Reference - 7.5 MHz k400 kHz
Reference t7.5 MHz *400 kHz
Reference - 5 MHz +300 kHz

HP 8559A Specifications

General

Brand	HP
Model	8559A
Category	Measuring Instruments
Language	English