HP Car 3490A -hp, z z, :H F, o o o o, SectionII, Model3490A, Option 045. Figure, TRIGGERCONNECTbRJl1, o o o o o z Z z z z z z, T R I G G E RC O N N E C T OJRl

SectionII

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Model3490A

T R I G G E RC O N N E C T OJRl 1

U	t	J	J	E
!2				lg
9				V
=				g
F		C		E
J				F
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F		L
		L

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o o o o o z Z z z z z z

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MatingConnector:

*rp- PartNo. 1251.0142

AmphenolNo.57-30141

Sample/Hold TTL Trigger:

LOW input level ((+ 0.4 V) for at least30 nstriggers Sample/Hold circuits and/or triggers 34904 to take a reading.

Sample/Hold AC Trigger:

Negativegoing edge of an input pulse at least 30 ns wide and having an amplitude of at least 2 V triggers Sample/Hold circuits and/or triggers 3490A to take a reading.

L E T F :

L External Trigger Flag goes LOW when the 3490A is ready for an external trigger, and goes HIGH when trigger is received (34904 is not looking for a triggerl.

*Outguard ground is isolated from inguard circuit common (input Low Terminal) and chassis(power line) ground and may be floated a maximum of 40 V above chassis.

Figure2-10. TriggerConnections,GPIB Option 030.

2-40.TriggerConnections,GPIB0ption030.241.Figure 2-10 shows the rear panel Trigger con-

nector, Jll, and lists the External Trigger signals.The mating connector for Jll is -hp-Part No. 12514142 (Amphenol 57-30l4l).

2-42.Sample/HoldConnections,0ption040/045.

243.Option 045. Figure 2-ll shows the external trigger connections for Option 045, which is Sample/

Hold without Option 020 or Option 030. The mating connector for Trigger Connector Jll is {rp- Part No. 125141 42 (Amphenol57-3014 I ).

2-44. Sample/Hold with BCD Remote Expand Option

020.When Sample/Hold is included in an instrument with the BCD RemoteExpandOption 020, the Sample/ Hold trigger connections are located on the Remote Input Connector, J7. Figure 2-6 shows this connector and describesthe trigger signals.The mating connector

TRIGGERCONNECTbRJl1

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I	l	J	I	E
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o		c	l	o
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F		=		F
)		o	l	F
! -		t - ?		( )

:H F

*o ( J i f C ) ( J r

u i z z ' @ O z z A i

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zz z 2 Z Z Z

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l

	A
a i	, 4
*	*

Sample/Hold TTL Trigger:

Mating Connector:LOW input level {(+ O.4 V) for .)t least 30 ns triggers

+rp_part No. 1251*,142 Sample/Hold circuits and/or triggers 34904 to take a reading. Must be HIGH at least60o ps prior to going Low'

Amphenol No.57-30141

Sample/Hold AC Trigger:

Negative-goingedge of an input pulse at least 3() ns wide and having an amplitude of at least 2 V triggers Sample/Hold circuits and/or triggers 3490A to take a reading. Must be stable at least 2 ps prior to negtive transition.

Stretched Pulse Output:

Changesfrom HIGH l2+z.q V) to LoW ({+ o.+ V) for a minimum ot 24O tts for each Sample/Hold TTL Triggpr or Sample/Hold AC Trigger input.

The mating connector for Jl 1 is *tp- Part No. 1251{142 (Amphenol 57-30141) supplied with Option 045 or Option

030.

*Outguardground is isolatedfrom inguardcircuit common (input Low Terminalland chassis(power linel ground and may be floated a maximum of 40 V above chassis.

Figure2-11. TriggerConnectionsS/H Option 045.