Practical Instrument Electronics 541 - Manual (Page 4)

Practical Instrument Electronics
82 East Main Street Suite 3.14 • Webster, NY 14580 Tel: 585.872.9350 • Fax: 585.872.2638 • [email protected] • www.piecal.com
Page 4
SOURCE
Choose this function to provide a frequency
signal into flow meters or any input devices that
measure frequency signals.
1) Disconnect the input signal from the device
to be calibrated.
2) Press and release the SOURCE/
AMPLITUDE Key until the desired frequency
range is displayed
w .
3) Press and hold SOURCE/AMPLITUDE key to
enable amplitude adjustment. Turn the EZ-Dial
knob
u to adjust the amplitude voltage from 0.1-
12.0 Vp.
Press and release the SOURCE/AMPLITUDE or
STORE/CLEAR button to save your selection.
4) Connect the 541 to the input of the device to be
calibrated.
Turn the EZ-Dial knob u to change the output frequency in increments of one least significant digit.
Push down and turn for faster dialing with increments of 100 digits.
Move the EZ-Check slide switch q on the side of the calibrator up to recall the HI output value and
down to select the LO output value.
Calibrating Frequency Instruments
SOURCE
CPH 1 - 20000
20000 HI
Storing EZ-Check Outputs
STORING HI and LO EZ-Check Outputs
1) Store your high (SPAN) output frequency by moving the EZ-Check switch q to the HI position
and turn the EZ-Dial knob u until the desired frequency is on the display. Press the STORE/
CLEAR Key and STORED appears on the display.
2) Store your low (ZERO) output frequency by moving the EZ-Check switch q to the LO position
and turn the EZ-Dial knob u until the desired frequency is on the display. Press the STORE/
CLEAR Key and STORED appears on the display.
3) Instantly output your SPAN and ZERO frequency outputs by moving the EZ-Check switch q
between HI and LO. You may also select any third frequency output (such as mid-range) using
the middle position on the EZ-Check switch.
Position the optical pickup to be verified over the green GATE TIME LED. The LED is synchronized
to the pulse output of the 541. Follow the Calibrating Frequency Instruments section to adjust the
output frequency.
Calibrating Optical Pickups