DI-4108 and DI-4208 Hardware Manual
Specifications
4
Input low voltage threshold:
0.8 V
Terminal count:
65,535
Maximum rate frequency:
50 KHz with one enabled channel
20 KHz with 2-4 enabled channels
10 KHz with 5-7 enabled channels
Minimum rate frequency:
0.5 Hz
Maximum count frequency:
50 kHz
Digital Ports Programmed as Switch
Maximum drain voltage:
25V
Maximum sink current:
100 mA
Ethernet Interface
Type:
10/100Base-T
Connector:
RJ-45
Protocol:
TCP/IP
Server Type:
DHCP or Fixed IP
Removable Memory
Type:
MLC, pSLC, or SLC flash memory (with USB SD card reader); USB
thumb drive
Required Format:
FAT32
Number of Channels:
1; Unlock code required for 2 or more
Indicators and Connections
USB Interface:
USB 2.0 (mini-B style connector)
Button:
Multi-function control (Start, Stop, Save Configuration, Apply Configu-
ration)
USB A Connector (Drive):
USB drive for Stand-alone data logging
Cannot be used concurrently with the USB interface
Input connections:
Two 16-position screw terminal strips
Status LED:
One multicolor LED for status indication
USB ChannelStretch™ Operation
Total Max Units:
16
Max Channel Count:
128 Analog, 112 Digital
Max Throughput:
≥480 kHz (higher speeds may result in data loss)
Channel skew between any 2 units:
10 µS, typical
Synchronization Conditions:
Syncs with any combination of DI-1120, DI-4108, DI-4208, and DI-
4718B USB instruments.
All synced instruments must operate at the same sample rate per channel,
regardless of channel number, type, or range.
All instruments must be connected to the same USB controller. The use
of USB hubs are recommended to meet this requirement.
