Reducing Recall Time

‘lb reduce time during recall and frequency changes, the raw offset function and the

spur avoidance function can be turned off. ‘RI turn these functions off, press [system) : .;“W :<: i d .<.:<q..w ; .:.: ‘,i’:,‘,

~~~~~~~~~ ~~~~~~~~~.. f#jy: %&ig ~~()$fj& , /.. P...

The raw offset function is normally on and controls the sampler and attenuator offsets. The spur avoidance function is normally on and generates values as part of the sampler offset table. The creation of this table takes considerable time during a recall of an instrument state.

lb save time at recalls and during frequency changes, both functions should be turned off. This will avoid generating the sampler offset table.

Raw offsets may be turned on or off individually for each channel. They follow the channel coupling. For dual channel operation, raw offsets should be turned off for each channel if the channels are uncoupled. Spur avoidance is always coupled between channels, therefore both channels are turned on or off at the same time.

Both functions must be turned off to realize the recall time savings.

The following table lists the recall state times with the following functions on or off: raw offsets, spur avoidance, and blank display. Using blank display may speed up recall times.

 

 

OpZdOM

 

 

 

Channel

 

 

Points

 

 

Raw

 

 

 

 

 

 

lbtallmle

 

 

 

Bedl-only Time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

onset

 

 

 

 

 

 

 

 

(--w

 

 

 

 

 

 

(=s)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BlankOR

 

BlankOn

 

BlamkOS

 

Blank011

 

 

 

 

 

I

Recall and Sweep1

I

DualChan.

 

1

1601

 

 

 

 

1

 

On

 

1

 

 

 

338

 

(

 

 

1.011

1

.397

1

,678

1

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Recall and Sweep1

I

DualChan.

 

1 1601

 

 

 

 

1 Off 1 .669 1 A41 1 .218 1 ,208

1

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sweep only (no Recall)l

I

DualChan.

I

 

1601

 

I

 

 

 

 

n/a I

~41

)

 

~43

I norecall I

nod

 

 

I

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Recall and Sweep1

I

DualChan.

 

)

201

 

 

)

 

 

On

1

 

 

.3Q2

1

 

 

227

 

 

 

 

304

 

 

 

 

,147

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

F&call and Sweep1

I

Dual

C&an.

 

1 201 1 Off

1

.368 1 .180

1

.288

1

 

 

.102

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

Sweep only (no Reca$

I

DualChan.

I

201 I n/a I .OSS I .081 I no red I no rd I

I

Recall and Sweep*

I

DualChan.

 

1

201

 

 

1

 

 

On

1

 

 

.610

1

 

 

557

 

1

 

 

.396

1

 

.371

1

 

I

Recall and Sweep*

I

 

DualChan.

 

1

201

 

 

1

 

 

Off

1

 

 

A62

)

 

 

460

 

1

 

343

1

 

.271

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 Sweeponly (noReca$ I

DualChan.

 

 

I 201 I n/a I .214 I .186 I no recall I no ra

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

F&cdl and SweeDl

I

SindeChan.

 

1

1601

1

On

 

 

 

I

.342

 

I

.778

 

 

I

A01

 

I

346

 

 

I

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ftecall and SweeDl

I

Side Ghan.

 

1

1601

 

 

 

 

I

Oip

 

 

I

.645

 

I

 

578

 

 

I

 

.204

 

I

 

 

,145

I

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Recall and SweeD*

I

SindeChan.

 

 

1601

I

On

I

1.858 I 2.203 I 1.000 I 1.366

I

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Recall and Sweep*

I

single

than.

1

 

1601 I

 

 

 

OIT

I

1.298

 

1

 

1.468

 

1

A40

 

1

 

.611

1

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sweep only (no Recall)* I

SingleGhan.

 

1

1601 I n/a I AX? I .347 I norecall 1 norecail I

 

 

Instrument State: CF- lGHz, Span=2MHz, IF BW=6 Hz. HP-IB commands sent for timing are

 

 

 

 

 

 

 

 

 

 

 

 

Reca&OPC?;SING; or, for sweep only, OPC?;SING;.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 Error &rrection OFF.

2 Error Ckmection ON.

6-68 Optimizing Measurement Results

Page 280
Image 280
HP 8753E manual Reducing Recall Time, ~~~~~~~~~ ~~~~~~~~~.. f#jy %&ig ~~$fj& , /.. P