Dimensions:

Height:

3.5" (8.89 cm) – 2 RU

Width:

19" (48.26 cm)

Depth:

11" (27.94 cm)

Operating Temperature:

0° C to 50° C

Metering Inputs:

16 inputs +/-4.5VDC maximum referenced to ground

Status Inputs:

16 inputs 0-28VDC or switch closure

Command Outputs:

32 open collector outputs (16 raise, 16 lower) maximum 250mA, 28V; 10 amp maximum with optional IP-8 interface panel. Configurable command duration from .22 to 28 seconds per channel.*

Failsafe & Alarm Outputs:

Open collector fail-safe output activates 90 seconds after detection of studio to transmitter link failure. Configurable alarm delay from 0 to 126 seconds per channel.*

Front Panel Controls:

Front panel selection of mode, maintenance override, channel increment, channel decrement, on/raise, off/lower, alarm clear.

Calibration:

Each channel is calibrated using the raise and lower keys to adjust the reading of the sample to the proper display value. The speed of the change in value is proportional, permitting ±1 digit adjustment or rapid gross changes.

Communications Link:

Modem boards are installed for the class of service requested. A 2-wire modem is used for audio over a leased line or twisted pair. The Universal Modem provides independent path for send and receive, each configurable for audio, RS-232 or sub-carrier frequencies.

Modem Characteristics:

Wire Modem:

600 ohms balanced, -9dBm nominal out, -30dBm min. in

Universal Modem:

2000 ohms unbalanced, 1.5V p-p out, .25V p-p min. in

Modulation:

FSK:

1070Hz and 1270Hz transmitter to studio, 2025Hz and 2225Hz studio to transmitter.

Subcarrier Frequencies:

Frequencies of 39, 67, 92, 110, 152, and 185 KHz.

Data Rate:

300 bps full duplex with error detection.

Display:

32 character (16 x 2) LCD alphanumeric display, 16 LED status indicators, 3 mode indicators.

A/D Converter:

12-bit dual slope integration with auto-zero and inherent RF and 60Hz rejection.

Measurement Accuracy:

Better than 0.1% for 4V input; Better than 0.5% at min. 0.25V input.

Memory Retention:

Non-volatile memory for storage of calibration constants, setup information, and user defined labels for ten years without power.

External Connections:

DB-37P for analog and status inputs, DB-37S for control outputs, BNC connectors for use with radio modem, barrier strip for use with wire modem, IEC power cord for AC power.

Power Requirements:

117 VAC nominal, 50/60Hz; 30W. 220 VAC available.