HP 8501a, 8505a, 8754a schematic

8501A-4

Scans by ArtekMedia © 2008

HP

MODEL 8501A STORAGE-NORMALIZER

All

Serials

ADJUSTMENT PROCEDURE FOR COMPATABILITY

MODEL 8754A NETWORK

8754A

Network Analyzer. These adjustments should only be made

operate only with an 8754A. Following adjustment the 8501A

Model 8505A Network Analyzer.

to

Section

For

all

HP

Model 8501 A Storage-Normalizers internal adjustments need
bility with
if the
not

compatible with the

be required

the

850lA

is

to

operate with the 8505A, refer

WITH THE

HP Model

intended

to

HP

and Service Manual (HP Part Number 08501-90022).

The adjustment procedure for compatibility with

1.

Connect the

850lA

to

the

8754A

via

the

the Normalizer Interconnect Cable (HP Part Number

08501-60067).

S E R V C E

ANALYZER

to

be made for compati-

In

the

future, should the 850 I A

V,

Adjustments,

8754A

is

as

follows:

of

the

850lA

NOT

Supersedes;

is

Operating

E

None

2.

Set the controls

8501 A

8754A

MP/jb/WO

on

the

850lA

STORAGE
MAGNIFIER

and

8754A

as

OFF

Xl
CHANNEL J INPUT ON
CHANNEL 1 AVERAGING

OFF
CHANNEL 2 INPUT ON
CHANNEL 2 AVERAGING

CHANNELl
CHANNEL 2
FREQUENCY

MHz

SWEEP

OFF

A

OFF

FULL

AUTO, FAST

follows:

10/80-4514

For

more information, call your local

970·7500, Canadian (416) 678·9430,

SA,

7,

rue

du

Bois·du·lan,

Printed

III

U.S.A,

P.O,

HP

Sales Office or nearest Regional Office:

Ask

the operator for instrument sales,

Box,

CH

1217 Meyrin

2,

Geneva,

Switzerland. In

Or

Eastern

write Hewlett·Packard, 1501

Japan:

(201) 265·5000: Midwestern (312) 255·9800; Soutllern (404) 955·1500; Western (213)

Yokogawa·Hewlelt·Packard

Flin-

~aI

Page

Mill

Road,

Palo

ltd.,

29·21, Takaido·Higashi 3·chome, Suginami·ku,

Alto,

HEWLETT
PACKARD

CA

94304, In Europe: Hewlett·Packard

Tokyo

168,

Page

Scans by ArtekMedia © 2008

:2

8501A-4

MARKERS
REFERENCE POSITION
REFERENCE POSITION
REFERENCE POSITION CH

HORIZONTAL POSN and

GAIN controls

3. On the 8501A, press the STORAGE ON pushbutton. Adjust the rear panel X-OFFSET
RECT control to place the left

4. On the 8501
center graticule line.

5.

On the 8754A, set the controls
CHANNELl

CHANNEL 2

6.

On the
ENCE POSITION CH 2

7.

On the 8501 A press the STORAGE
to

place the trace on the center graticule line.

A,

850lA

adjust the rear panel Y-OFFSET CH I control to place the trace on the

press the STORAGE

~

CH

I

CH

2

I:

end

of

as

follows:

control to place the trace on

OFF
ON

(pressed)
ON (pressed)
Adjust to place the reference line trace on the

center graticule line.

to

Adjust

the left and right edges

the trace on the left edge

OFF

center the reference line trace between

of

the CRT graticule.

of

CRT graticule.

B

OFF

pushbutton. On

ON

pushbutton. Adjust the Y-OFFSET

the

8754A adjust the REFER-

the

center graticule.

CH

2 control

8.

On the

9.

On the

10.

On the 8754A, set the SWEEP WIDTH
erclocIwise such

cule lines (the left edge

II.

On the
AGE ON and STORAGE
(A6R14) controls (see Figure 1 on facing page) so
position horizontally across the CRT between STORAGE

850lA
8754A

FREQUENCY
TUNING
MARKERS
SWEEP WIDTH
TUNING FINE

850IA

press the STORAGE
set the controls

that

press the STORAGE ON pushbutton, then ERASE. Alternately press STOR-

OFF

pushbutton. Remove the 8501 A

as

follows:

MHz

MHz

5 marker birdies are placed on the 2nd,

of

the graticule is the 1st graticule line).

OFF

while adjusting the DAC GAIN (A6R3) and RAMP

CENTER

Adjust for display reading
50

MHz
50
Adjust to place the marker birdie on

graticule line.

MHz

control to

top

cover.

of

500

MHz

SOU.

Adjust

that

the 5 markers appear in the same
OFF

the

CAL control count-

4th,

6th,

8th,

and 10th grati-

and STORAGE ON.

the

center

OFF

8501A-4

Scans by ArtekMedia © 2008

REAR PANEL

RAMP

OFFSET

A6R14

DAC

GAIN

A6R3

Page 3

12. Attach
8501 A

FRONT PANEL

Figure

the

label included with this service note towards

top

cover. Reinstall the cover on

1.

Internal

Adjustments

the

8501 A.

Locations

the

rear

of

the outside

of

the

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