Harry
Circuit is as below from AN-308. Supply voltage is +15/-15VDC. Signal input is on pins 16, 17; for test purposes I've connected a battery to the input.
For comparator - Pin 10 is at GND and I connect Pin 9 to +15 or -15V to set gain to +1 or -1.
Output measured on Pin13.
Gain error is particularly large for -1 gain.
Thank you for your help.
regards
Gerry