Tektronix 494AP service manual Outputsignalcharacteristics, Teristics

Specification- 494At494ApService,Vol. 1

Table2-4(Continued)

OUTPUTSIGNALCHARACTERISTICS

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Characteristic

EXTERNALMIXER

Supplementallnformation

When EXT MIXERis selected,pro- videsbias from a 70f,)sourcefor an externalmixer. Bias is set by the MANUALPEAKcontrolor internally set if AUTOPEAKis selected.

AlsoseeInputCharacteristics.

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Bias Range

VERT (OUTPUT)(RearPanet)

Replaced by 75 O RF Input for ion 07. See Ootions

+1.0V to -2.0V (default)

or.

-1.0Vto +2.0V(internallyselectable)

Provides 0.5V t5% of signal per division of video that is above and below the centerline. Source impedanceis approximately1 kO.

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HORIZ(OUTPUT)(Rearpanet)

PEN LIFT (RearPanel)

10 MHz lF (OUTPUT)(Rear Panet)

Provides0.5 V/Div either side ol center.Full range-2.5V to +2.5 V. Sourceimpedanceis approximately 1 k o .

TTL compatible, nominal +5 V to lift plotter pen

Provides access to the 10 MHz lF signal. Output level is approximately

-5 dBm for a full screen signal at

-40 dBm reference level. Nominal impedanceis approximately50 O.

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IEEESTD488PORT(RearPanel)	ln accordancewith IEEE 488-78
Manualversion	standard
(plotteroutput)	lmplementedas SHl, AHo, T3, L0,
	SR0,RL0,PP0,DC0,DT0,and C0.
Programmable version	lmplementedas sH1, AH1, T5, L3,
{P)
	SR1,RL1 .PP1,DC1,DT1,andC0 .
	SeeProgrammersManual.
PROBEPOWER(RearPanet)	Provides operating voltages for
Outputs	active probes.
Pin1	+5 V at'100 mA maximum
Pin 2	Ground
Pin3	-15V at 100mA maximum
P i n4	+'15V at 100mA maximum
J104ACCESSORY(RearPanet)	All inputs and outputsare listedin
	Tabe2.3 INPUTSIGNALCHARAC.
	TERISTICS.

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