| Modules and accuracy specifications |
| Scanning Inputs |
| Analog |
34901A, 34902A, and 34908A multiplexer channels |
| Digital |
34907A digital in and totalize
Scan list Scans channels in ascending order |
| Scan Triggering |
| Source |
Interval, external, button press, software, or on monitor channel alarm |
| Scan count |
1 to 50,000 or continuous |
| Scan interval |
0 to 99 hours; 1ms step size |
| Channel delay |
0 to 60 seconds per channel; 1 ms step size |
| External trig delay |
<300 µs. With monitor on <200 ms |
| External trig jitter |
<2 ms |
| Alarms |
| Analog inputs |
Hi, Lo, or Hi + Lo evaluated each scan |
| Digital inputs |
34907A digital in maskable pattern match or state change
34907A totalize: Hi limit only |
| Monitor channel |
Alarm evaluated each reading |
| Alarm Outputs |
4 TTL compatible
Selectable TTL logic Hi or Lo on fail |
| Latency |
5 ms (typical) |
| Memory |
| Battery backed, 4 year typical life1 |
| Readings |
50,000 with timestamp
Readable during scan |
| States |
5 instrument states with user label |
| Alarm Queue |
Up to 20 events with channel number, reading, and timestamp |
| System Features |
| Per-channel Math |
Individual Mx + B scaling and Min/Max/Average calculated real time |
| Power Fail Recovery |
Resumes scanning automatically |
| Relay maintenance |
Counts each relay closure and stores on module User resettable |
| Real-time clock |
Battery-backed, 4-year typical life1 |
| General Specifications |
| Power Supply |
100V/120V/220V/240V ±10% |
| Power Line Frequency |
45 Hz to 66 Hz automatically sensed |
| Power Consumption |
12 W (25 VA peak) |
| Operating Environment |
Full accuracy for 0ºC to 55ºC
Full accuracy to 80% R.H. at 40ºC |
| Storage Environment |
-40ºC to 70ºC1 |
| Weight |
Net 3.6 kg (8.0 lbs) |
| Safety |
Conforms to CSA, UL-1244, IEC 1010 Cat I |
| RFI and ESD |
CISPR 11, IEC 801/2/3/4 |
- Storage at temperatures above 40ºC will decrease battery life
- Software provided on CD-ROM and includes utility to create floppy disks for installation
- Interface and driver must be purchased and installed separately
- 90 MHz Pentium, 20 MB RAM
- Requires VISA command library for IEEE-488
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