Measurement Computing Digital HS - Manual (Page 5)

1.2 Available Accessories
Additional accessories that can be ordered for the Digital488HS/32 include:
CA-7-1 1.5 foot IEEE 488 cable
CA-7-3 6 foot shielded IEEE 488 cable
CA-7-4 6 foot reverse entry IEEE 488 cable
CN-20 Right angle IEEE 488 adapter, male and female
CN-22 IEEE 488 multi-tap bus strip, four female connectors
in parallel
CN-23 IEEE 488 panel mount feed-through connector, male
and female
DigitalHS-901 Additional Instruction Manual
1.3 Specifications
*
Digital I/O Capability: 16-bit TTL compatible inputs, 16-bit TTL compatible outputs. Also
included are two output and two input data handshake lines, two status bit lines, clear output, trigger
output, reset input, input END of data and output END of data lines.
Logic Levels:
Output : V
OH
= 2 volts min @ I
OH
= -15 mA ; 3.4 volts typ @ I
OH
= -3 mA
V
OL
= 0.5 volts max @ I
OL
= 24 mA ; 0.4 volts MAX @ I
OL
= 12 mA
Input: V
IH
= 2 volts min
V
IL
= 0.8 volts max
I
IH
= 0.02 mA max @ V
IN
= 2.7 volts (Data Input Lines)
I
IL
= -0.20 mA max @ V
IN
= 0.4 volts (Data Input Lines)
I
IL
= -0.50 mA max @ V
IN
= 0.4 volts (Control & Handshake Input Lines)
I
IH
= -0.30 mA max @ V
IN
= 2.7 volts (Control & Handshake Input Lines)
Logic Sense: Switch selectable power on and Device Clear (DCL & SDC) levels on output
data lines. Switch selectable logic inversion for input data port, output data port,
input handshake lines, output handshake lines, END lines, trigger and clear lines.