Keysight Y1276A Guida rapida

Y1276A Advanced Cooling Spacer Kit

For M9484C and

Related Chassis

INSTALLATION NOTE

This installation note contains procedures for installing the Y1276A Cooling

Spacer Kit for the Keysight M9484C and related chassis in a Keysight rack.

The parts included with the Y1276A are listed in the following tables (note that

not all parts listed are available as field-replaceable parts).

Y1276A Advanced Cooling Spacer Kit for M9484C and related chassis

These kits are designed for Keysight racks. A non-Keysight rack may

require the use of support rails.

Part Number Description Quantity

M9044-80201 Cooling Spacer Kit, Extended 1 (See Figure 2)

M9044-80204 PSU Air Vent Channel Kit 1 (See Figure 5)

M9044-04105 Air Blocker, Spacer 1

0515-1946 M3 x 0.5 x 6mm Flat Head T10 Torx Screws w/Patch Lock

(for Spacer Air Blocker)

0515-0372 M3 x 0.5 x 8mm Pan Head T10 Torx Screws W/Washer

(for Cooling Spacer)

0515-0430 M3x 0.5 x 6mm Pan Head T10 Torx Screws W/Washer

M3X0.5 6mm-LG SST-300 Passivated (5x on PSU Air Channel)

2 Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note

Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note Procedure

General Rack Mounting Guidelines

In rack mounting the chassis, follow these guidelines:

-Always begin installing the chassis and heavy instruments at the bottom of

the rack and work up. This maintains a lower center of gravity and reduces the

possibility of the rack tipping.

-Anti-tipping feet, if available with the rack, should always be extended.

-The heaviest instrument or chassis should always be mounted at the bottom

of the rack.

-For maximum cooling and optimum rack thermal efficiency, place the

instrument or chassis with the greatest power consumption towards the top of

the rack. This promotes efficient cooling since heat rises when placed nearer

to the top of the rack, high power instruments will not unnecessarily heat

other instruments. However, in doing this, do not violate the guideline that

the heaviest instruments should be placed at the bottom of the rack.

-If instruments or modules in the chassis are consuming maximum power, 1U

of rack space is required for ventilation above the Keysight PXIe chassis.

Procedure

Tools Required: #1 and #2 Phillips screwdriver, Torx T10 Screwdriver

1Refer to Figure 1 on page 3. Remove four (4) M3 screws from the chassis top

cover and Chassis Fan Tray of the chassis.

To prevent injury during rack mounting, the chassis should

be empty and two people should lift it into the rack.

Do not stand the chassis on its side; the side handles may cause

the chassis to tip over.

Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note 3

Procedure Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note

2Place Cooling Spacer (M9044-80201) on top of the Chassis. See Figure 2.

3Align Cooling Spacer bottom to the four screw holes which has been removed

in Figure 1 on page 3.

4Secure Cooling Spacer bottom with four (4) M3 x 8mm Pan Head Torx T10

screws (0515-0372). See Figure 2.

Figure 1 Removing the screws

Figure 2 Secure spacer on the chassis by using Pan Head screws

Remove two M3 screws

from chassis top cover

Remove two M3 screws

from chassis fan tray

Cooling spacer

M9044-80201

Secure spacer by using four

M3 x 8mm Pan Head Torx T10 Screw

0515-0372

Do not place instrument more than 60 kg on top of cooling

spacer.

4 Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note

Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note Procedure

5Make sure the Cooling Spacer orientation is as per below illustration. See

Figure 3.

6Slot in the Spacer Air Blocker (M9044-04105) into Cooling Spacer and rotate

90º into upright orientation. See Figure 3.

7Attach the Air Blocker against the air vents at the front of Cooling Spacer.

8Secure the Air Blocker with two (2) M3 x 6mm Torx T10 screws (0515-1946).

See Figure 4.

Figure 3 Cooling Spacer orientation. Please see

Figure 4 Secure spacer on the chassis with M3 x 6mm screws

Spacer Air Blocker

M9044-04105

M3 x 6mm Flat

Head Torx T10

Screw

0515-1946

Do not install Spacer Air Blocker if higher air flow performance is

needed.

below.

Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note 5

Procedure Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note

9Remove PSU Air Channel top cover by unfastening five of the thumb screws.

See Figure 5.

10 Attach PSU Air Channel latches on the rack rail. See Figure 6.

PSU Air Channel Installation require Y1257A/Y1258A Rack Mount

Kit.

Figure 5 Removing PSU Air Channel top cover

Figure 6 Placing PSU Air Channel latches on rack rail

Latches

6 Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note

Keysight Y1276A Advanced Cooling Spacer Kit for M9484C and Related Chassis Installation Note Procedure

11 Secure PSU Air Channel bottom cover to chassis with five (5) M3 x 6mm Pan

Head Torx T10 screws (0515-0430). See Figure 7.

12 Close PSU Air Channel top cover and tighten the five (5) thumb screws. See

Figure 8.

Figure 7 Secure PSU Air Channel bottom cover

Figure 8 Tighten thumb screws

M3 x 6mm Pan Head Torx T10 Screw

0515-0430

Tighten five

thumb screws

Close PSU Air

Channel top cover

This information is subject to change without notice.

Second Edition April 2023

*Y1276-90001*

Y1276-90001

www.keysight.com

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