Specification—492/492P Service Vol. I (SN B030000 & up)
PROBE POWER. The PROBE POWER connector on the rear
panel of this instrum ent provides operating power fo r active
probe systems. It is not recommended that these connectors be
used as a power sourcefor applications other than the compati ble
probes or other accessories which are specifically designed for
use with this source.
2 7 2 6 -2 1
Fig. 1-1. Probe power connector pin out.
Table 1-2
ENVIRONMENTAL CHARACTERISTICS
Meets MIL T-28800B, type III, class 3, style C specifications, comprised of the following
Characteristic
Description
Temperature
Operating and humidity
-15°C to +55° C/95% (+5%,
- 0 %) relative humidity.
Non-operating
— 62°C to +85°C.
NOTE
After storage at temperatures below the operating range, the microcomputer may not initialize on power-up. If so,
allow the instrument to warm up for 15 minutes and re-initialize the microcomputer by turning the POWER Off for 5
seconds then back On.
Altitude
Operating
15,000 feet.
Non-operating
40,000 feet.
Humidity (Non-operating)
Five cycles (120 hours) of MIL-Std-810.
Vibration
Method 514 Procedure X (modified) MIL-Std-810C.
Operating
Resonant searches along all three axes at 0.025 inch, frequency varied from
10—55 Hz, 15 minutes. All major resonances must be minimum per axis plus dwell
at reasonant frequency of 55 Hz for 10 minutes minimum per axis. Instrument
secured to vibration platform during test. Total vibration time about 75 minutes.
1-12 REV JUN 1982
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