Advertisement
CHECK CHARt
1. Warm up Dual Channel DC Amplifier at least five minutes.
Line voltage at 115
volts.
Perform following tests on each channel of the instrument.
2. Check that POSITION control will move stylus across entire recording channel.
Set stylus 20 divisions above bottom of chart.
3. Insert signal from 1.5 volt flashlight battery and series switch.
Set RANGE swit
to I VOLT/CM and GAIN control full right.
Check for at least 17 mm. stylus deflf
tion (21 divisions with narrow-channel Permapaper).
Set GAIN for 15 divisions
deflection.
4. Intermittently operate switch and adjust DAMPING control for best possible squar
wave on the recording.
Leading edge of square wave should have fast rise, with
no overshoot.
5. Insert signal from audio oscillator, with Dual Channel DC Amplifier channel set
to 10 divisions peak-to-peak recording.
Response should be as shown on characte
istic curve in Instruction Manual.
- 6 -
Advertisement
