Wavetek 132 Specifiche Scaricare il pdf (Pagina 7)

20.

21.

22.

23.

24.

25.

26.

27.

28.

Verify that NOISE FREQ HZ vernier control

provides approximately IO: 1 variation in clock

frequency at the NOISE CLOCK connector

(rear panel).

Rotate function selector to

/‘=ltif’

position and

check to assure oscilloscope displays analog

noise.

Check to assure SEQUENCE LENGTH push

buttons vary the length of the sequence of

analog noise. (Use NOISE SYNC connector on

rear panel.)

Connect oscilloscope external trigger cable to

FUNCTION SYNC connector (rear panel) and

set function selector to

-I

position.

Set S/N

N/S

(dB)

selector to -10 position

and vernier control fully ccw.

Depress MODE

FM push button and check

to assure square waveforms are frequency modu-

lated by analog noise.

Release MODE

FM push button and depress

MODE

S/N push button. Check to assure

square wave and analog noise are mixed.

Depress MODE

N/S push button and rotate

S/N

N/S

(dB)

selector ccw through each

position, checking for reduction in signal level.

Verify that the S/N

N/S

(dB)

vernier attenu-

ates the signal approximately 10

between

each step of the S/N

N/S (dB) selector.

OPERATING CONTROLS

The operating controls and electrical connections for

the Model 132 are shown in Figures

2-I

and 2-2. Each

of the following paragraph numbers corresponds to a

number appearing in Figure 2-1, front panel, or

Figure 2-2, rear panel. The listing below discusses each

control and its function.

FRONT PANEL

FREQ HZ/PWR OFF

Selects one of six dec-

ade ranges from X 10 to

X1M

for generator

frequency.

This value multiplied by the fre-

quency dial setting (3) gives the output frequen-

cy of the generator. Extreme ccw rotation will

place the switch in the PWR OFF position, turn-

ing off all power to the function and noise

generators. This control has no affect on the

noise frequency.

FREQ VERNIER

Allows precision electronic

control of the signal output frequency. A full

turn of the control is approximately equal to 1%

MODE

of full scale. When turned to the full cw position

(CAL), settings on the main dial will be cali-

brated.

Frequency Dial

Allows coarse control of the

signal output frequency.

Frequency Index

Indicates the frequency dial

setting (3) by reading the dial position opposite

the scribe line on the frequency index. The in-

dex is illuminated when power to the unit is on.

Function Selector

Selects the desired function

or noise output. To select

‘1,

i*\./

waveforms, or J/-IL_ or

/‘-‘iv‘

noise, the FUNC

push button (7) must be depressed.

OUTPUT VERNIER (dB)

Provides vernier

control of 0 through -20

from the OUTPUT

ATTEN

(dB)

setting (12). This is the fine ad-

justment for the output signal and will attenuate

signal and noise.

FUNC

When depressed, this control allows

the selected waveform or noise, as determined

by the position of the function selector (5), to

be present at the

5Oa

OUT connector (11).

This push button must also be in the depressed

position for the frequency modulation mode

(10).

S/N

Depressing this push button allows a

calibrated amount of analog noise to be added

to the selected signal, either

wave. The signal-to-noise ratio (S/N) is

determined by the S/N

N/S (dB) attenuator

control (13). When in this mode, the peak to

peak signal amplitude is reduced internally, since

adding noise to the signal would overdrive the

output amplifier.

N/S

Depressing this push button allows a

calibrated amount of the selected signal, either

‘L

wave, to be added to the

analog noise. The noise-to-signal ratio (N/S) is

determined by the S/N

N/S (dB) attenuator

control (13). When in this mode, the peak to

peak signal amplitude is reduced internally, since

adding the signal to the noise would overdrive

the output amplifier.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

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Smeg CS15-5 Installation Manual (20 pages)

Brand: Smeg | Category: Ovens | Size: 2.45 MB |

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Wavetek 132 Specifiche Pagina 7

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