HP Car 3490A C r, l-5, (239, SoC), (0.01, (0.02, (o.02, r 10c), (23o c, 10.q)0v, 30.days, SectionI, + 0.015), 6 months, + 0.015), 50oC)r t, Model34904, r 1.00fi)v

Model34904 SectionI

Table1-1. Specifications(Cont,d.)

SAMPLE/HOLD(OPtion040/0451

Full-rangeDisplay:

r 1.00fi)v

+10.q)0v Sample/Hold measurement displar/ is 4 full

!100.00V digits plus overrange "1 ",

r 1000.0v

Ovrrangs: 2O%on all range5exceptIOOOV range.

Sample/HoldMeasurementAccuracy (DC function, I V through 1ü)0 V ranges!:

24hours(23o			r 10c)		t (% of reading + oÄoI rcngel
					r {0.01+0.0151
(23o c		r
30.days	c		so c)		r	(0.01
						+ 0.015)
90 days(23oc r so c)					r (O.01+ 0.015)
(239						(0.02
6 months	C r			SoC)	r
						+ 0.0151
1 year1230c r so cl					I	(o.02
						+ 0.015)

Temperature Coefficient (04 C to 50oC)r t !O.OO2% ol reading + 0.0O1 % of range/o C).

Table1-2. GeneralInformation.

Maximum Input Voltages:

Between Input High and Low: t 10O0 Vrms (1 1500 V peak)

Between either Low terminal and Guard: I 200 V Between Guard and Chassis:.4 500 V

Between O Signal High and Low: t 250 Vrms

RangeSeleaion: Manual, autornatic, or Remote (Optionall

Maximum Reading Rate (Minimum Sample periodr per Readingl:

GENERALPURPOSEINTERFACEBUSLOGICLEVELS

All lines are LOW true except HRFD and HDAC, which are H I G H t r u e .

Input Signals:

Each input line is terminated with 3 kslto + S V and 6.2 ke to ground, and one TTL load.

Output Signals:

Function

DC Volts

AC Volts

Ohms

. 1 k t o 100k

1,000k 10.oo0k

Option 050

2 4 0 . 2 m s + 5 m s 1.26s+ .025s

2 4 O . 2 m s + 5 m s 3 O 0 . 2 m s + 6 m s 66O.3ms+ 12 ms

Option 060

2 0 0 . 1m s + 4 m s 1.05s+ .025s

2 0 O . 1m s + 4 m s 2 5 0 . 1m s + 5 m s 55O.2ms* 10 ms

Each output can drive 15 GplB loads. The output is an open-collector driver capable of sinking 4g mA at 0.4 V out-

GENERAL PURPOSE INTERFACE BUS (ourguard)ground is

isolated from inguard circuit common (input Low terminal! and chassis {power tine) ground and may be floated a maximum of 40 V above chassis.

SAMPLE/HOLD

'Sample Rate Control set to FAST position and instrument not in owrload.

Response Time (to within rated accuracy for a step input applied coincident with encode triggerl:

DC Volts: ( 200 ms

A C V o l t s : < l s e c o n d Ohms:

0.1k to 100 k ranges: ( 200 ms 10O0 k range: ( 2S0 ms

10,OO0k range: (		5SO ms	.:
Ohms Terminal CharacteristiG3:
Maximum voltage across unknown resistance:
25 V in overload
13 V for valid reading
Nominal current through unknown resistance:
O.1 k to 10 k ranges: .l mA
100 kand 1000 k ranges: 10 pA
10,000krange: l	rtA
Overload protection:
Nondestructive:	r	2SO V
Fusedestructive: r		10OOV

Power Raquirements:

10o v, 120 V ,22O V , or 24O y l+ 5 %, - 1O %l; 48 Hzto 44OHz Power Consumption: <60 VA with all options

Environmental Characteristics:

Operating Temperature: Oo C to 5Oo C

Humidity Range: ( g5 % relative humidity, Oo C to 4Oo C

Storage Temperature: - 2Oo C to + 75o C

Acquisition Time (Settling tam6 for a f ult+ange slep inputl:

MaximumAcquisitionTimeto

Range within 0.Ol %of FinalValue

Aperture Time (Delay betwsenthe time a Sample/HoldTrigger /''

command h receiwd and the time Amplifier A entors the Hold model:

Track/Hold: ( 400 ns (typically 22Onsl; cVcle-to_clrlclevari-

a t i o n < t 1 0 n s .

Acquire/Hold:

1V, 100 V ranges	615	rls t	4O0 ns	512.6	lls r	zl00 ns
10 V, 1000 V ranges	154	6 t	40O ns	129.4	tts t	4OO ns

Sample/Hold Trigger I nputs:

$Tp]9/!9!d TTL Trisser (dc coupted): lnput must go from HIGH ()+ 2.4 V) to LOW {<+ 0.4 V} for at teast 30 ns. Signal must be HIGH at least 600 ps prior to going LOW. Must be capable of sinking I mA.

Sample/Hold AC Trigger (ac coupled): Negative-goingleadingedge of a pulse at least 30 ns wide and having an amditude of 2 V to 2O0 V. Signal must be stable at least 2 1tsDrior to negtive-going transition.

l-5