HP Car 3490A t o, '10, 100v, SectionI, (Cont'd), .o07 .oo5, .oo7 .005 .0m, Table1-1.Specifications

SectionI Model34904

(Cont'd).Table1-1. Specifications

RATIO (Option 0801

Ratio Measurement Input Configuration:

3 wire; External Reference Low is conlmon with Input Low. External Reference High may be positive or negative with

respect to	Low.	Input
	Ratio =
	Ext. Ref.
External Reference lnput Resistance: > 107O
DC/DC Measurement Accuracy:		Ext. Ref. Range
! (Ao/oof	Reading r Bo/oof lnput	Range + -

Ext. Ref . Voltage

/

External Reference Ranges: 1 V : 1 O . 1V t o t 1 . 2 V

1 0 V : t l V t o 1 1 2 V

{1 V range should be used for greater accuracy if the Ext- Ref' voltage is between 1 V and 1.2 V.

Input Ranges:

DC: o.1 V to 1000 V

AC: 1 V to 1000 V

xC%of Input Range)

lnput Range

24 hours(23"C I 1"c)

3o days(23"c r 5"c)

9o days(23"c t s"cl

6 months(23oc r s"cl

1 year123oct 5"c)

		1 V			1 V ,1 0 V		100v, 1000v
Ext. Ref.		B	c	A	B	c	A	B	c
Range	A
t o v	.003	.001	.oo2	.002 .001 .oo2			.003	.001	.002
1 V	.o03	.002	.002	.002 .002 .002			.005	.003	.002
1 0 v	.oo7 .005 .0m			.002 .003 .002			.005	.003	.002
1 V	. 0 0 8 . 0 1 5 . 0 0 3			.o03 .012 .003			.006 .o12 .003
1 0 v	.o07 .oo5 .002			.002 .003 .002			.006	.o03	.002
1 V	.008 .015 .003			.o03 .012 .OO3			_007 .012		.003
1 0 v	.007	.005	.002	.002 .003 .oo2			.007	.003	.002
1 V	.008	.015	.003	.003 .012 .003			.008	.012	.OO3
1 0 v	.o07	.005	.002	.003 .o03 .002			.008	.003	.o02
1 V	.008	.o15	.o04	.004 .012 .004			. o 0 9 . 0 1 2 . O O 4

Notes:

1.On the lOOOV range, add 0.04 PPM/volt to the % of reading specification'

2.EMF's generated external to the 34904 {lay b9 cgmpensated to achieve the % of range accuracy specified by utilizing the rear panel ThermafAdjust provided'

DC/DC Temperature Coeff icient:
! lo/oof Reading + % of Input	Range)/-C
					lnput Range
Ext. Ref.			1 V		1 V , 1 0 V			100v, 1000v
Range
'10		r	{0.0003+ 0.0007}	r	(0.0001+ 0.00041		=	(0.0005
v								+ 0.0004)
1 V		r	(0.0004+ 0.0021	r	(0.0002		t	(0.0006+ 0.002)
						+ 0.0021
DC/DC Measurement Accuracy Example:					AC/DC	Measurement Accuracy :
lnput Voltage = 0.5 V; Input Range= 1 V					10 V Ext. Ref. Range: Same as AC Voltage aocuracy
Ext. Ref. Voltage = 0.5 V; Ext. Ref . Range= 1 V					1 V Ext. Ref. Range: ^			Same^asAC Voltage accuracv
30 day spec. = t (0.0037oof	Reading + O.O12%of lnput			Range	24 hours 123-C t 1-C)l
Ext. Ref. Range					30 davs to 1 year Q3-C x 5-C): Add					o.01 to % of Rang
x 0.003% of Input Rangel						AC Voltage accuracy
Ext. Ref . Voltage					{SeeTable 1-1 of main 34904 manual.l
Ratio Readingshould be 1.00000
0.003% of Reading	=	3 counts			AC/DC Temperature Coeff icient:
O.O12%of Input Range	: 12 counts				10V	Ext. Ref.	Range: Same as		AC	Voltage temperature
x o.oos"Ä of Input Range=		6 counts			coefficient				o/o
*. 5 V					1 V	Ext. Ref. Range: Add		0.001 to	ol	Range in AC Voltage
Total rror tolerance	= 21 counts				temperature coeff icient specification
Display should be 0.99979 to		1.00021			(SeeTable 1-1 of main 3490A manual.)

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