Geometrics G-822A, Руководство по эксплуатации

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Geometrics, Inc. G-822/G-823 Magnetometer Manual
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Description Weight Dimensions
Cesium sensor package
P/N 27516-01 1lb. 8oz.
2’3/8”x5-1/2” cylindrical housing with 109 in. cable.
Termination: Burndy 0119 G6JF12-88 PNE
Electronics W/counter
P/N 27512-04 2lb. 5oz. 12-5/8” including connectors.
11-5/8” long x 2-1/2” cylindrical housing
Carrying Case
P/N 27615-01 10 lbs.
18l” x 9.5w” x 15h”
Analog signal/power cable
P/N 27565-02 14oz.
33’ coaxial with BNC termination
Digital signal/power cable
P/N 27611-02 2lb, 2oz.
25’ multi-conductor: Belden # 8418. Termination:
SP06A14-19S-SR and SP06A14-19P-SR
Power/data junction box
P/N 24870-20 9oz. L 4-3/4”, W 3-1/4”, H 3-1/4”
Serial data cable
P/N 60-230-237 5oz.
6’ DB9
Optional AC/DC Power Supply
P/N 24810-02 2lbs.
(typical) Input: 100v-240v @ 50-60 hz; output 30v, 1.9A
7” x 4” x 2.5” (typical) with 4’ output cord.
The G-823A is shipped with a 25ft external signal/power interface cable, a power/data
junction box, and an RS-232 data cable. The signal/power interface cable attaches to a
mating connector on the sensor driver module. These components are used to connect the
magnetometer to the user’s 30VDC power source and logging computer. The
signal/power cable also carries analog signal but the junction box does not break these
channels out to its DB9 connector. If the user wishes to observe or record analog signal
they may use the interface cable for this purpose. To do so we recommend that electrical
connection is made using a mating connector (e.g. Amphenol SP02A-14-19S) although
the connectors used on the interface cable are of the solder type and they may be removed
and reused to suit the application. Table 4 describes the pin-out of the 19 pin connector
on the G-823B magnetometer. The interface cable is wired straight through, pin-to-pin
.
Note that when the interface cable is used there is still Larmor signal on the BNC
and that the power supply voltage is also present. Take care to avoid a short circuit
at his connector. We recommend that you cap this BNC connection when it is not in
use.
Circuit description of the external signal/power interface cable Connector type SP02A-14 -19P
Pin # Function Description
A 30V power Magnetometer power; 24 – 32VDC
B GND Power ground
C TxD From logging computer, connects to RxD of G-823B
D Rxd To logging computer, connects to TxD of G-823B
E COMM RS-232
F RESET Contact closure to GND
G EVENT External Trigger Input
Table 3. G-823A standard component weights and dimensions
Table 4. G-823A interface cable pin-out