Heathkit IG-18 SIGN-SQUARE WAVE AUDIO GENERATOR

The Heathkit IG-18 Sign-Square Wave Audio Generator is designed for laboratory
as well as service and testing. Sine wave signals are available between 1 Hz and
100 kHz. The output is stepped from .003 volt to 10 volts. Square wave signals
are available from 5 Hz to 100 kHz. The output is available at .1 volt, 1 volt,
and 10 volts. The sine and square wave frequencies are identical and the level
of each is independently adjustable. Both signals may be used either independently
or simultaneously.

SPECIFICATIONS

SINE WAVE OUTPUT
Frequency Range . . . . . . . . . . . . .  1 Hz to 100 kHz

Output Voltage Range. . . . . . . . . . .  0 – .003
					   0 – .01
					   0 – .03
					   0 – .1
					   0 – .3
					   0 – 1
					   0 – 3
					   0 – 10

Internal Load . . . . . . . . . . . . . .  Internal 600 ohm load available on .003, .01, .03, .1, .3, and 1 volt ranges

dB Ranges . . . . . . . . . . . . . . . .  -62 to +22 dB
					   -12 to +2 on meter
					   -50 to +20 in eight 10 dB switch positions
					   +2 dB maximum into 600 ohm load

Output Variation. . . . . . . . . . . . .  +/- 1 dB from 10 Hz to 100 kHz

Output Indication . . . . . . . . . . . .  Two voltage scales and one dB scale on front panel meter

Output Impedance. . . . . . . . . . . . .  10 volt range: 0 – 1000 ohms
					   3 volt range: 800 – 1000 ohms
					   1 volt range and lower: 600 ohms

Meter Accuracy. . . . . . . . . . . . . .  +/- 10% of full scale with proper load termination

Distortion. . . . . . . . . . . . . . . .  Less than .1% from 10 Hz to 20 kHz

SQUARE WAVE OUTPUT
Frequency Range . . . . . . . . . . . . .  5 Hz to 100 kHz

Output Voltage Range. . . . . . . . . . .  0 – .1
					   0 – 1
					   0 – 10 (zero-to-peak into 2 kohms or higher load)

Output Impedance. . . . . . . . . . . . .  52 ? on .1 V and 1 V ranges
					   Up to 220 ? on 10 V range

Rise Time . . . . . . . . . . . . . . . .  Less than 50 nanoseconds

GENERAL
Frequency Selection . . . . . . . . . . .  First two significant figures on 0 – 100 and 0 – 10 switches each in ten steps
					   Third figure on 0 – 1 control
					   Multiplier switch: X1, X10, X100, & X1000

Frequency Error . . . . . . . . . . . . .  Within +/- 5% of first and second digit

Power Requirements. . . . . . . . . . . .  105 -- 125 VAC or 210 – 250 VAC, 50/60 Hz, 6 Watts

Dimensions. . . . . . . . . . . . . . . .  5-1/8” high x 13-1/4” wide x 7” deep

Net Weight. . . . . . . . . . . . . . . .  7 lbs