932502G / 0618
2. THE DSPEC 50
SHUTDOWN IN (SHUTDOWN)
Rear-panel BNC turns off the bias supply voltage when
the detector is warm. Software-selectable ORTEC or TTL mode (SMART-1 detectors auto-
select the SMART shutdown mode). In ORTEC mode, the detector’s Bias Shutdown cable
must be connected to this input or the high voltage will not turn on.
CHANGE SAMPLE OUT (CHG SMPL)
Rear-panel BNC connector, TTL compatible.
SAMPLE READY IN (SMPL RDY)
Rear-panel BNC connector accepts TTL level signal
from sample changer.
HIGH VOLTAGE
!
Positive 0–5 kV
Rear-panel SHV connector, 500 V–5 kV. Only active when the unit is
set for positive bias.
!
Negative 0–5 kV
Rear-panel SHV connector, 500 V–5 kV. Only active when the unit is
set for negative bias.
ETHERNET
Standard 10/100 Mbit Ethernet connection. Link and Activity LEDs are
integrated into the connector.
USB
Emulates a USB connection. Any number of DSPEC 50s can be connected to a host
computer via USB.
SD
SecureDigital™ (SD) memory card slot for uploading a maximum of 9 optional
.JPG
-
format image files. See page 19.
RESET
Maintenance port.
AC (MAINS) POWER MODULE
100–240 V ac, 47–63 Hz, 110 watts. The unit is shipped
with the voltage setting, fusing, and 3-prong grounded ac power cord appropriate for your
location. To change the fuses or voltage setting, see the next section.
2.2.1. Changing the Fuse(s) and Line Voltage
This instrument uses a power entry module that includes a reversible fuse holder and a voltage
selector card. The voltage selector card lets you configure the instrument for a nominal 100,
120, 230, or 240 V ac. The module door has a small window that shows the line voltage setting
now in use.
To open the module:
1)
Be sure the instrument is disconnected from the ac (mains) power source.
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