500 Current, dc, auto-ranging Channels used for current measurements 501 Current, dc, 200µA require the fitting of a (See IMP 100Ω shunt. 502 Current, dc, 2mA Installation Guide) 503 Current, dc, 20mA 504 Current, dc, 1mA (Same modes as for 1A, 1C and 1E) 700 TTL logic levels Digital status inputs 701 12V (3V/9V) logic levels (Codes 701 and 702 apply only to channels 1 702 Two-wire, measurement through 18) 25kΩ 1 = high (V or measured. Ω) 0 = low (V or Ω) measured. (For channel 19 and 20, the only logical level mode applicable is mode 700. Selection of the TTL or 12V logic levels is made by split pads in the connector block) 710 Reserved for internal use 720 Reserved for internal use 740 -ve going edge Event count totalise. 741 +ve going edge A continuous count of events is kept, reset only 742 +ve or going edge by the CL command –ve (Same modes as for 2A) 750 -ve going edge Event count increment 751 +ve going edge A continuous count of events is kept since the 752 +ve or going edge last trigger. –ve (Same modes as for 2A) 800 Switch output off (high) For digital output, set channel to logic or ‘1’ ‘0’; 801 Switch output on (low) Similar to modes as for 2A, except: 810 Alarm op high Status of channel can be read back 820 Alarm op low Outputs default to Off on power-up 830 Hw watch 840 Sw watch 850 Hw & Sw 900 Gate time = 10ms Frequency Measurement 901 Gate time = 100ms 902 Gate time = 1s 903 Gate time = 10s 910 1 period Multiple period measurement 911 10 periods Returns the time for one period, in seconds 912 100 periods (Same modes as for 2A) 913 1000 periods For status measurements in channels 1 through 18, the logic levels applicable are:
500 Current, dc, auto-ranging Channels used for current measurements require the fitting of a 100Ω shunt. (See IMP Installation Guide) (Same modes as for 1A, 1C and 1E) 501 Current, dc, 200µA 502 Current, dc, 2mA 503 Current, dc, 20mA 504 Current, dc, 1mA 700 TTL logic levels Digital status inputs (Codes 701 and 702 apply only to channels 1 through 18) 1 = high (V or Ω) measured. 0 = low (V or Ω) measured. (For channel 19 and 20, the only logical level mode applicable is mode 700. Selection of the TTL or 12V logic levels is made by split pads in the connector block) 701 12V (3V/9V) logic levels 702 Two-wire, 25kΩ measurement 710 Reserved for internal use 720 Reserved for internal use 740 -ve going edge Event count totalise. A continuous count of events is kept, reset only by the CL command (Same modes as for 2A) 741 +ve going edge 742 +ve or –ve going edge 750 -ve going edge Event count increment A continuous count of events is kept since the last trigger. (Same modes as for 2A) 751 +ve going edge 752 +ve or –ve going edge 800 Switch output off (high) For digital output, set channel to logic ‘1’ or ‘0’; Similar to modes as for 2A, except: Status of channel can be read back Outputs default to Off on power-up 801 Switch output on (low) 810 Alarm op high 820 Alarm op low 830 Hw watch 840 Sw watch 850 Hw & Sw 900 Gate time = 10ms Frequency Measurement 901 Gate time = 100ms 902 Gate time = 1s 903 Gate time = 10s 910 1 period Multiple period measurement Returns the time for one period, in seconds (Same modes as for 2A) 911 10 periods 912 100 periods 913 1000 periods For status measurements in channels 1 through 18, the logic levels applicable are: