 The Endevco Model 136 is a three-channel, DC amplifier
that is manually or computer programmable. Manual control
is accomplished at the front panel by means of a "Select
Channel" push-button, three (3) "Channel LEDs", one "Select
Function" push-button, five "Function LEDs", a four character
LED display, showing the state of each function/channel,
and four "Edit" push-buttons to change the entries in
the LED display. There are three LEDs used as fault status
indicators for the auto zero function. Computer control
is accomplished using the standard RS-232 port and optional
Application Software.
There are two modes of operation, Normal and Programming/Setup.
Both modes of operation utilize the front panel LED display.
In the Normal Mode, there are two states, Monitoring Mode
and Non-Monitoring. In the Monitoring Mode, the LED display
indicates the RMS reading of the signal present at the
output of the selected channel. The Non-Monitoring Mode
turns off the LED display for lower noise applications
and to minimize power consumption. In the Programming
Mode, the unit is ready for manual programming or editing
of existing channel setup. The unit will automatically
return to the Normal Mode of operation after 20 seconds
of inactivity of the front panel or after pressing the
"Select Function" push-button while the "Monitoring State"
function LED is flashing.
The rear panel contains (on a per-channel basis) a BNC
output connector, a 9-pin "D" input connector, the RS-232
connector and the input power connector. Three Model 136
units may be configured in a 19-inch rack mount adapter.
The standard unit is powered by 90-264 VAC, 50/60 Hz.
The -1 option is powered by 9 to 18 VDC, making it ideal
for portable use or for automobile test applications.
Features:
• Three-channel DC differential voltage amplifier
• 200 kHz bandwidth (-3 dB corner)
• Auto-zero and shunt calibration
• Gain range 0 to 1000
• Four selectable excitation voltage levels
• RS-232 serial interface
• 12 VDC power option
• Built-in 4-pole Butterworth low-pass filter
Endevco Model 136
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